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Best friends charged with murder -- a real-life "Thelma and Louise"?

Produced by Alec Sirken and Taigi Smith
[This story was first broadcast on Oct. 6, 2012. It was updated on April 13, 2013.]

LAKE CHARLES, La. | Robyn Davis and Carol "Sissy" Saltzman do what southern women have always done when times get tough: They head to the salon to look their best... and they are doing it together.

You won't find two women who are closer.

"It's the kind of friendship that all people should have," Robyn explained. "...it's the one person that you can call no matter what and they're there regardless... and I mean, most people don't have that..."

"She is a very generous very kind, loving person. She's a wonderful mother..." Sissy told "48 Hours." She then turned to Robyn. "You know, you are. You're a great girl, I love you."

"Well thank you, I love you too, sister..." said Robyn.

These days their 20-year friendship is more important than ever, since they've been charged with murder -- together -- after Robyn's husband was shot to death alongside his car on an isolated road. Both women adamantly deny the charge.

"It's unconscionable that they can do this to innocent people," said Sissy.

"[I] never could I have imagined this would happen to me or anybody else in America. But I've come to realize that it can happen to anybody," said Robyn during her salon visit.

There were no salons in the county jail where Robyn and Sissy spent two months before getting out on bail.

"How long were you in jail?" "48 Hours correspondent Erin Moriarty asked Robyn. "Sixty-seven days," she replied.

"They wouldn't let us see or speak to one another," Sissy told Moriarty.

"What was it like for you, Sissy?"

"Um. Well, it wasn't nice," she says with a laugh. "It was pretty tough, it was."

Added Robyn, "I cried and I cried and I cried. I cried for at least three weeks."

Robyn and Sissy are preparing for trial and the fight of their lives: To convince a jury they had nothing to do with Brian Davis' death.

Brian and Robyn Davis
Brian and Robyn Davis Robyn Davis

She loved the man, Robyn says, although she admits that's not how the relationship started when she first met him at the office in 2001.

"I said, 'Where the hell did you all get him from?'" Robyn told Moriarty.

"Does that mean you didn't like him at first?"

"No, not at all! We did not like one another period," said Robyn.

They worked together at an insurance company in Hammond, La.

"I can remember the phone call when she first went out with him," Sissy said laughing. "She's like, 'You're not gonna believe this. ...I went out with this guy, Brian, that I work with...' And I was like, 'Yeah, call me back and let me know how that works out for you (laughs).'"

It did work out... at least for the most part. They married in 2008, after a four-year courtship.

"I was happy. I was at home and you know, he was working," Robyn said. "For the first time in my life I just worried about nothing, I mean, just nothing."

It was Brian's third marriage and Robyn's second. Combined, they had six children; Robyn had two, Brian had four.

Asked how she would describe Brian, Sissy told Moriarty, "Loud and proud, I mean...he was funny. He was a great dad too. I mean, he's a people person, you know, people person. Everywhere he went he talked to somebody about something. He knew something about everything."

To everyone who knew him, including his younger brother, Scott, Brian was a man who loved a good time.

"He always had a smile on his face. He had fun whether it was work or whether it was play. He laughed about it," said Scott.

But sometimes Brian's idea of fun got in the way of his marriages. Brian had an eye for other women... and he didn't just look.

"So he wasn't always faithful?" Moriarty asked.

"No," Robyn replied.

"He had been caught twice in Baton Rouge before they ever moved here," added Sissy.

"With another woman?" asked Moriarty.

"Yes, two different women. You know, then they moved here and...he still wanted to marry her," Sissy explained. "I said, 'Robyn, there's nothing wrong with loving Brian...He does love you. And if you choose to stay with him, you can't hold this over his head 'cause you'll never have a good marriage...Then when she finally decided she was ready to marry him, I mean, she was just...I'd never seen her happier, honest to God, never seen her happier."

But Robyn wasn't happy about the fact that Brian was still cheating on her.

Her daughter, Kelsey, who lived with her and Brian, didn't quite trust him.

"I didn't know that she knew. I always thought she was oblivious to the whole thing," Kelsey explained. "You could tell that he was up to something...he was flirtatious with women, everywhere we went."

Robyn saw it too.

"So what did you choose to do?" asked Moriarty asked Robyn.

"Suck it up and you know, put my best foot forward and rock on," she replied.

"It was very, very awkward, and I felt really bad for what I did," said Fannie Dietz, one of the women Brian was cheating with. Their two-year affair began before Brian married Robyn and continued throughout the marriage.

"Feelings developed and it just kept escalating from there," Fannie told Moriarty.

"Did you love Brian Davis?"

"Yes I did," she replied.

"And did Brian love you?"

"Yes."

The affair had ended a few months before June 29, 2009, when Brian Davis disappeared. According to Robyn and Sissy, he had left to go boat shopping and never came home. His body was discovered on a deserted road by a man out test driving a car.

Video: Witness talks about finding Davis' body

"He was shot four times in the back and he didn't have a chance. He didn't see it coming," said Calcasieu Parish Sheriff Tony Mancuso.

At the crime scene, Sheriff Mancuso says investigators uncovered several strange clues: Brian's car was jacked up, his shoes were off, his belt was undone and some of his valuables were missing.

"When you first heard that your brother had been killed, what did you think?" Moriarty asked Scott Davis.

"My first thoughts were he was looking for a boat. Someone killed him. Someone...Something went bad during a transaction," he replied.

But just hours into their murder investigation, police started to wonder if Robyn was involved based on the way she was reacting to her husband's death.

"I eventually walked over there and had a brief encounter with her to tell her just, 'Hey, I'm sorry about your husband,' you know, 'we're gonna do everything we can do to try to figure out why this happened and who did this,'" Mancuso explained, "but she was more interested and kinda joked about me knowing her friend Sissy's boyfriend."

That's when Sissy, too, came under scrutiny. Special prosecutor Rick Bryant believes the two best friends plotted Brian's death.

"So you really believe these two blonde, middle-aged women lured Brian Davis out to this secluded spot and then shot him four times, cold-bloodedly, and watched him die?" Moriarty asked Bryant.

"Absolutely...Absolutely," he replied.

To the women's many friends, including Marcy Wilson, the whole idea is preposterous.

"There is no possible way! Robyn can't even step on a roach, Sissy's barely five foot tall...neither one of them know how to use a gun," she exclaimed. "This is stuff you watch on TV...that you never imagine that it would happen to you or to someone you love..."

"But these women do not look like cold-blooded killers," Moriarty noted to Rick Bryant.

"Well, there you go! Tell me what a cold blooded killer looks like," he said. "... murderers come in all shapes and sizes."

It would take months for police to build their case and arrest the women.

"She's your best friend," Moriarty said to Sissy.

"Oh yeah," she replied.

"And Robyn says you'd do anything for her."

"Absolutely."

"Would you, if she asked you to kill somebody, would you do that?"

"Oh, my God. No, no, not for her, not for Jesus Christ himself, no, no, no," Sissy replied. "I don't have that in me."

Brian Davis loved to fish on the many waterways in south Louisiana.

"From the early days I can remember...that was one of the things that brought joy to his life was fishing," Scott Davis said of his brother.

And on the last day of his life, a Monday late in June 2009, Brian was looking to buy a boat.

"When he got stuck on something, I don't care what it was...it was just like a dog chasing a bone," Robyn Davis told Erin Moriarty.

"What was he stuck on?"

"Getting a boat..."

Brian worked that day for a few hours and then returned home to pick up Robyn. He was excited about the excursion.

"We already had a pile of brochures," she recalled. "I mean, he had an index card, 'I'm going here. I'm going there,' dragging me all around and looking and stuff."

The couple stopped at a boat store called Jerry's Marine about a half hour away, where they were seen on security videotape a little before 3 o'clock that afternoon.

"I was being facetious like, 'Oh God, if I have to look at one more boat I'm gonna die," Robyn continued.

Soon, Robyn grew tired of boat shopping and says Brian drove her home in her Trailblazer.

"We came home and I said, 'Look, you can go do whatever you're gonna do, I'm gonna do this, this and that. I'll see you after a while. Bye.'"

Robyn says Brian then switched cars. He got in his own Honda Accord and drove off alone to do more boat shopping.

"There was nothing out of the ordinary about that day," said Robyn.

But something out of the ordinary did happen that night: Brian Davis never returned home.

"Then all of a sudden, it was like 6:30, 7 o'clock...I don't know what time it was," she told Moriarty. "I tried to call him ... And then the weather got so bad."

"What do you mean?"

"It was storming."

Robyn's first fear was that Brian was up to his old tricks again and had gone to meet another woman.

"...there was a small part of me that thought maybe he left me," she said.

As the clock ticked past 10 p.m., Robyn says she started to panic.

"I stayed up the whole night," she said.

"You called hospitals?" asked Moriarty.

"Oh, yeah. I called everyone around here."

Including the police, who told her she had to wait 24 hours to report someone missing:

"I called earlier today at 10:45 and the officer told me to call back," Robyn said in her call to police.

Brian's brother, Scott Davis, was home in Tennessee. Asked how he found out Brian was missing, he told Moriarty, "My sister called me...and said 'Brian's missing.'"

Before long, friends and family were leaving frantic messages for Brian on his cell phone:

"Everybody under God's green earth is worried about you," said a male voice.

"Hey Brian, it's Mama, please call me as soon as possible son.:

Two days later, William Brian Davis' body was found.

"And about 10:03, 10:05, whenever it was, my phone rang and it was her Aunt Patsy. She said, 'Sissy, did you see the news? They found a man on Wagon Wheel Road.' I said, 'Where is that at?'" said Sissy.

"And the next thing I heard was a phone call from my mother...weeping that they had found him dead..." Scott told Moriarty.

"What did your mother say?"

"Her exact words were, 'They killed him,'" he replied.

"What's going through your mind, Sissy?" asked Moriarty.

"Oh, I'm sick. Sick. 'Cause part [of] me's thinking, you know, 'It's not him,' but I knew, you know, by what they said, that it was," she replied.

Sissy then broke the devastating news to Robyn.

"'They found Brian.' And she started throwing up," she said.

"I started throwing up, I didn't get out of bed. You know, I was depressed. My kids kept saying, 'Mama,' you know, 'get up,' said Robyn.

Back on Wagon Wheel Road, puzzled investigators were combing the crime scene for clues.

"Do you think that you were a suspect from the very beginning?" Moriarty asked Robyn.

"Yeah, I do. In retrospect, yeah I do. I don't know why," she replied.

Nine days after Brian's murder, police interrogated Robyn on videotape:

Detective: Do you recall what you were wearing?

Robyn Davis: I think I had on a pair of capri's and a black T-shirt.

Video: Watch excerpts of Robin's interrogation

And if Robyn was involved, investigators tried to pressure Sissy into giving up her best friend:

Detective: So we're giving you an option to sit here and tell us what's really going on. What really went down?

Sissy Saltzman: I don't know.

Sissy, like Robyn, talked to investigators without a lawyer present:

Detective: Did you have anything to do with or have any knowledge of the death of Brian Davis?

Sissy Saltzman: No... Is that what you're saying? You think I killed Brian?

When she realized she was a suspect, Sissy hired attorney Shane Hinch.

"The police were showin' up at inopportune times despite her willingness to cooperate," Hinch explained, "tellin' her neighbors that she was a murderer."

Hinch and Robyn's lawyer, Glen Vamvoras, were convinced the police had it all wrong. That's why both attorneys agreed to take their cases for no fee.

"I keep thinking, 'This is a dream. This isn't happening. They're not really serious about prosecuting these girls.' But they are," said Vamvoras.

Robyn's attorney believes Brian's philandering ways may have cost him his life. He may have gone to the remote area for a secret sexual encounter with Fannie Dietz or another woman.

"Brian Davis was a womanizer..." Vamvoras said. "He liked to have sex outside, in very secluded areas, similar to the one where he was found when he died."

Soon after Brian's death, Robyn told police about Fannie, his married mistress. When police contacted Fannie, she gave them explicit emails between the two of them.

"She kept every email her and Brian ever sent to each other. She gave them to police, every single one of them..." said Hinch.

In one email Fannie wrote to Brian: "...that is kind of cool doing it in the daylight where somebody could see us."

"Is there any evidence to suggest that he might have been having sex?" Moriarty asked Vamvoras.

"His belt was undone and his shoes were off..." he replied.

"Something was going on back there..." Robyn said. "And he damn sure wasn't having sex with me back there."

And if anyone wanted Brian dead, say the women's attorneys, it was Fannie's husband, Shane Dietz.

"And if I was the husband and I read those emails between the level of how much the loved each other and the very descriptive, graphic, sexual content, I'd be extremely angry," said Hinch.

What brought Brian Davis to the end of a lonely dirt road in Lake Charles in June 2009? And who shot him in the back and left him to die by his car?

From the moment Sheriff Tony Mancuso and investigators arrived at the scene, nothing seemed to add up.

"I mean, does it make any sense that somebody would come here and change a tire?" Erin Moriarty asked Sheriff Mancuso.

"No, not at all," he replied.

Did Brian drive his Honda here planning to meet someone? Not likely, says his mistress Fannie Dietz. She told police Brian would never take his beloved Honda down a road like that for any reason.

"That's not Brian. If Brian drove from Lake Charles to Lafayette and got bugs on his windshield on his car, he was goin' through a carwash," she said.

Then there was that strange crime scene: Brian's wallet, laptop, cell phone, GPS and gun were all gone. Other valuables were left behind and that convinced police this was no robbery.

"His watch was still on his wrist, his rings were still on his hand...why would somebody kill somebody for a cell phone, a gun and little if any cash and be waiting for him at this secluded location at 3:50 in the afternoon? It makes no logical sense," said special prosecutor Rick Bryant.

Another odd clue -- that jacked-up car, as if Brian had stopped to fix a flat tire. But there's no evidence the tire was even punctured.

"The next day, they put air in the tire and realized that the tire held air, there was nothing wrong with the tire," said Mancuso.

"And what did that say?" asked Moriarty.

"That's when I think we started thinking, 'this may not be exactly what we believe it is...'" he replied.

But the clue that police say convinced them the women were lying came later, when police looked at their cell phone records.

"The phone records are certainly a smoking gun. There's no question about that. We felt like that was our best piece of evidence," said Mancuso.

All cell phones operate by sending a radio wave signal to the closest cell tower. That signal "pings" off that tower, which usually covers several square miles.

In her interview with police, Sissy Saltzman said she was at her home on the day Brian went missing -- with her cell phone -- from 11 a.m. until 3:30 p.m., waiting for Robyn Davis to pick her up:

Detective: So you stayed home all day, didn't go anywhere?

Sissy Saltzman: No sir, not until she came back and got me.

"Was Sissy telling the truth when she said that she was at her home and never left?" Moriarty asked Bryant.

"No, she was lying," he said.

"So Sissy says she's always here," Moriarty continued, pointing at a map, "waiting for Robyn to pick her up."

"Always," Bryant replied, "No vehicle, no transportation. Always at her home."

According to prosecutor Rick Bryant, any calls Sissy made from her home would have most likely pinged off a tower just 300 yards away.

"But, in fact, where do you believe she was?" asked Moriarty.

"We know starting at 1:38 she pings off this tower, the Hackberry Tower," said Bryant.

The Hackberry tower is 11 miles from Sissy's house, but it's also the tower closest to the crime scene.

"If Sissy were, in fact, at home all afternoon like she said, was there any way her cell phone could be pinging off a tower all the way down here or a tower all the way over here?" Moriarty asked, referring to the map.

"Absolutely not," said Bryant.

And police believe, contrary to Robyn and Sissy's story, that Brian never switched cars, never got into his Honda the day he died. Sissy had borrowed it the night before, as she told police.

Sissy Saltzman [police interview]: "Sunday night when I went to get into my car it wouldn't start. So I just took his car home because he was taking her truck to work."

And police believe she still had the car on Monday. According to Sheriff Mancuso, it was Sissy who drove the Honda to the remote location on Wagon Wheel Drive and lured Brian out there on the pretext of changing a tire.

"We believe that Sissy had the car. She came out here and staged -- said that they had a flat and Robyn told him, 'Hey we've got to go help Sissy, she's had a breakdown in your car,'" Mancuso said. "Simple as that."

When Robyn and Brian arrived at the scene, the sheriff says, one or both of the women shot and killed him. And why would Robyn want her husband dead? The oldest reason in the world -- money; more than $600,000 in insurance payouts.

"It's a substantial amount of money. It's certainly motive for murder in our opinion," said Mancuso.

Investigators discovered that Robyn had recently lost her job. Her love for video poker had racked up gambling debts, and she and Brian were on the verge of losing their home.

Robyn says those alleged motives are nonsense.

"I'm not gonna tell you that I never gambled...we gambled together. Brian and I gambled together...that's not the problem," she said.

And then, what is Sissy's motive for murder?

"I think she just had that close of a relationship with -- with Robyn," said Mancuso.

"I mean, that's a good friend," commented Moriarty.

"There's no question, there's no question. She did not crack," the sheriff said.

Finally, after a six-month investigation, police formally charged Robyn Davis and Sissy Saltzman with murder.

"What did this case become known to all of you?" Moriarty asked Mancuso.

"We called it the 'Thelma and Louise' case, obviously because of the movie," he replied.

The movie is a tale of two women friends and a murder. But in this case, the women's lawyers say it's like "Thelma and Louise" in only one way: It's all fantasy.

Asked if there's any physical evidence that ties them to the crime scene, Glen Vamvoras and Shane Hinch reply, "Not a shred" and "Absolutely zero."

To make matters worse, police lost what could have been a key piece of evidence -- a surveillance video tape from Fred's Lounge, a popular bar near the crime scene. Since the camera was aimed at the only road to the crime scene, it could have shown who was driving the Honda that day: Brian or Sissy.

"Do mistakes get made? Yes," Mancuso said. "There's no question. And it's unacceptable, but it happens."

And there is something else the police neglected -- another possible suspect, the husband of Brian's mistress, Fannie Dietz.

"I was waiting for somebody to call me, 'cause I figured, you know, 'Jealous husband. That's the first person they gonna go after, you know?'" Shane Dietz explained. "So I was freakin' out. ...but they never called me."

Shane Dietz was married to Fannie at the time and later divorced her. Fannie had confessed the affair to her husband just two months before Brian was killed.

"Did you lure him to that area, Wagon Wheel Road, and shoot him?" Moriarty asked Shane.

"Nope. I don't even know where Wagon Wheel Road is at. God honest truth," he said.

Police didn't interview him during their initial investigation.

"Why wouldn't investigators go talk to this man right away, you know his wife's having an affair. Why wouldn't you interview him right away?" Moriarty pressed Mancuso.

"I think you can second guess any investigation, I really do," he replied.

Police cleared Dietz because his employer said he was at work all day.

"It says to me that they suspected Robyn Davis from the very instant they met her," said defense attorney Glen Vamvoras, who is hoping that police mistakes and the lack of any physical evidence will add up to reasonable doubt.

And he points to one bizarre twist that shows the unlikelihood of Robyn being involved. An hour before police say Brian was murdered, Robyn was seen shopping for boats dressed in white pants and flip flops -- not exactly practical clothing for planning to kill a man.

"You don't plan to go kill somebody out in the boondocks...in white Capri pants," he said "She just wasn't dressed for murder in my opinion. I can tell you that. I thought that was a critical fact."

Robyn Davis and Sissy Saltzman, along with their close friend, Marcy Wilson are praying hard for a miracle.

"I would just like justice to be served all the way around for Robyn, for Brian and I...to put it to rest, make peace with it and go on..." said Sissy.

Three long years after Brian Davis' murder, Sissy and Robyn are finally about to go on trial.

"We've waited for this day for so long," Wilson said. "They'll finally have this off of them, you know? And be able to go on with their lives."

Sissy insists that the man she is accused of killing wasn't just Robyn's husband; he was also Sissy's best friend.

"I lost a best friend. And that has never been out of our line of vision," she said.

And when the day finally comes, the two women who do everything together enter the court together to stand trial for murder.

"So what do the two women face right now? " Erin Moriarty asked defense attorney Shane Hinch.

"Mandatory life," he replied. "You only leave -- in a pine box, basically -- the remainder of their natural life if convicted."

Cameras are not allowed in the courtroom for what both defense attorneys and prosecutors admit may be the toughest battle of their careers.

"No one can prepare you for how difficult circumstantial evidence cases are...you have no eyewitnesses, you have no physical evidence, you have no confession," said special prosecutor Rick Bryant.

"You have a case [where] you really believe your clients are innocent," Moriarty commented to defense attorney Glen Vamvoras.

"It makes it much more difficult," he said. "...and it has taken charge of me and I'm dedicated to it and I'm not going to quit until I get these girls off."

Also in the courtroom are Felicia Ballard and Sherry Lusk, who are serving as jurors for the first time.

"It was life changing," Luck said. "... to just sit there and look at the ladies day in and day out going 'Could they have? Maybe, maybe not' and to know that the decision was gonna be left up to us, it was hard."

Jurors say it was a job made even harder because the investigators didn't do their job.

"What about the fact that there were other possible suspects...Brian was having an affair..." Moriarty noted to Ballard.

"Yes," she replied.

"...and what about the fact that police lost that surveillance videotape?" Moriarty continued.

"That was...you only see stuff like that on TV...and in a crucial case like that, that could have nailed it," she said.

"What else bothered you" Moriarty asked the women.

"Brian, who is meticulous about everything...why in the world would he drive his car down that bumpy horrible road with a flat tire?" replied Lusk.

Jurors also had to deal with other troubling contradictions in Robyn's story.

"Look at her cell phone records. She says she called him right after he left. That's a lie. She also said, 'I left voicemails for him, several voicemails,'" Bryant said. "Not a single voicemail from his wife."

Jurors heard from experts who say those same cell phone records put the women at the crime scene.

"Our experts from the FBI would show that both of them were at or near the crime scene at the time of the death," said Bryant.

But the defense performed its own tests of the cell phone signals. What can happen, says investigator Erin Miller, is when one tower becomes overloaded, cell phone signals sometimes bounce to another tower.

"You just can't pinpoint someone's position, especially in a rural network like this," she explained.

However, their unscientific results could not be admitted as evidence at trial.

"I would cringe if that piece of evidence sent someone to the penitentiary," said Vamvoras.

But it wasn't just the cell phone evidence that the jury had to consider. They learned Robyn attempted to cash in on those life insurance policies valued at more than $600,000 just two weeks after Brian's death and some jurors were troubled by the women's apparent lack of emotion during trial.

"To me, they showed no emotion," Lusk noted. "Where's the emotion at? Please show me something."

As the jury begins deliberations, there is one juror -- Shandrika Washington -- who believes the prosecution failed to do its job.

"They didn't have enough evidence. It wasn't enough for me to convince me that they murdered Brian," said Washington.

As Robyn Davis contemplated spending the rest of her life in prison, the stress is clearly visible.

"I'm obviously a little nervous and stuff, but I'm still very confident," she said, "I still believe, you know, we've selected 12 people that have enough common sense to realize that we did not commit this crime. ...and they're educated and they're paying attention and I think that you know in the end we'll get what we need.

But suddenly "48 Hours"' interview is cut short... there's a verdict.

After less than three hours, Robyn Davis gets word the jury is back. As she rushes back to court with her defense team, Robyn prays the nightmare that she and Sissy have faced for more than three years is finally over.

Visibly shaken, fear and uncertainty have replaced Robyn's usual laughter.

There is also uncertainty in the jury room.

"There was one person who was holdin' out, wasn't she?" Erin Moriarty asked juror Felicia Ballard.

"Yes," she replied.

"One person that you couldn't bring to believe in guilt."

"Yes."

The holdout is Shandrika Washington.

"They just didn't have anything... No eyewitnesses, no murder weapon, no fingerprints," she said.

Even the cell phone evidence -- which places the women at the crime scene -- couldn't convince Washington that the women were guilty.

"None of the jurors have education in cell phone towers and how it works so that was kind of hard to make a decision off of that," she said.

"And so no matter what you discussed, she stuck with -" Moriarty asked Ballard.

"She stuck with not guilty," she replied.

"So there were 11 people that voted what?"

"Guilty."

"And one person who voted what?"

"Not guilty."

In nearly every state in this country, 11 jurors to one would have meant a mistrial; Sissy and Robyn would have walked out of the courtroom. But this is Louisiana, and here, only 10 jurors are needed for a murder conviction.

Video: Jurors speak out about verdict

"I knew what the verdict was when the first juror walked through the door because she was crying. And jurors who acquit people are generally not crying..." said Vamvoras.

Robyn Davis and Sissy Saltzman are both convicted of murder.

"Hard to believe that in the United States you can have a system where ... 11's good enough, 10's good enough. In any other state, except for Oregon, that's not the case," said Hinch.

"I was stunned when they read the verdict...it was shocking," said Robyn's daughter, Kelsey.

"I think the most pain I've ever felt is when they took 'em...that was horrible," said an emotional Marcy Wilson.

The lone holdout juror feels the family's pain.

"I didn't think this case would touch my life that way it did...It really hurt. To this day, it still hurts me," said Washington.

But those who loved Brian Davis don't share those doubts.

"We feel joy, we feel pain," his brother, Scott Davis, told Moriarty.

"You're angry, too," she said.

"Very angry..."

For Robyn's daughter, Kelsey, the reality of losing her mother, is too much to bear.

"If she's in jail and I try to get married and have kids...it's not fair. I'm only 21. I don't want to go the rest of my life without my mom or my dad..." she said in tears.

A month later, a tearful Robyn Davis faces her future.

"Kelsey's gonna be alright. I mean...their support system is just phenomenal," an emotional Robyn told Moriarty by phone in an interview at the prison, where they were separated by a partition.

Video: Robyn on the verdict
Video: Robyn and Sissy on their friendship
Video: Robyn and Sissy on finding the truth

"And like, Sunday, I called Kelsey, and -- they'd just gotten back from the family dinner that we do every Sunday. And it's like, my life is where it's supposed to be. It's movin' on, but I'm not in it. I'm here for -- and I don't know why I'm here," she continued.

And what about Sissy, whose friendship with Robyn landed her behind bars?

"How do you have that smile on your face," Moriarty asks during their interview in jail.

"I don't know...that's all I can do," she replied. "My worst nightmare has come true. From day one, I said, 'The two things that scare me the most is that my life is hanging on a ping off a cell phone tower and there's 12 people that's gonna judge me that don't know me."

Sissy Saltzman and Robyn Davis are serving their time in the same facility and they see each other briefly in the jail's church. But the women are determined to hold onto what they say matters the most.

"Still close friends?" Moriarty asked Robyn.

"Still just as close, if not stronger than we were before..." she replied.

"No anger between the two of you?"

"Nope."

"So your friendship will survive all of this?" Moriarty asked Sissy.

"I would hope so. I would really be pissed if it didn't after all of this," she said.

"My brother's in a tomb, he doesn't get to wake up and walk this earth anymore." Scott Davis said. "Until the day that I die, these two women will be responsible for my brother's murder."

Robyn Davis and Sissy Saltzman are appealing their convictions. If the appeal is denied, Brian's life insurance, worth $645,000, goes to his children.

Brian's former mistress, Fannie Dietz, is planning to remarry her ex-husband, Shane.

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