here's josh mankiewicz with "a texas twist." >> named for the body of christ, corpus christi sits on the texas gulf coast, and just east of the bay say park known for bird-watching. and that what this seagull was doing there when it came across something very unnatural. >> to me, it just looked like a pile of debris, to be honks. and then he looked, and he said, oh, my god, it's two bodies. >> reporter: a crime so shocking that years later, they're still talking about it. >> i can't even imagine what was in that person's mind that evoked this violence and this rage. >> reporter: two young women, who wanted them dead and why. >> it was a true who done it type murder. >> reporter: and along with who and why was the question of why here? >> this was definitely something that we weren't used to or accustomed to in our town. >> reporter: this part of texas isn't exactly ground zero for murder. it's known more for roping. riding. and friday night lights. here life is pretty simple, as are the values its people hold dear. like friendship. family. community. this is where 19-year-old mollie

here's josh mankiewicz with the conclusion of troubled waters. >> beach volleyball is a kid's game playedy grownups. murder for profit is played only by adults and it's for keeps. prosecutors believed eric bechler was trying to be successful at both. detectives had put him in jail. but then two weeks after eric's arrest came this head line in the local paper. witness in murder case doubts suspect's guilt. tina, who had worn a wire and helped police nail eric now said maybe he didn't kill her. >> i knew the kids had lost their mom and now going to probably lose their dad for a very long time. so i felt guilty. >> guilty that she had helped jail man she once thought she'd marry. >> he called me from the jail and told me he had tried to hang himself with his sheets. >> it was eric's frantic behavior from the lock-up, that was enough to make you think twice. >> i didn't want him to die. >> you felt guilty? >> i felt guilty. >> you tried to roll the whole thing back? >> yeah, i did. >> but she says she always felt he was guilty and in the winter of 2000, eric bechler went on trial. the star wi

here's josh mankiewicz with the conclusion of "mystery in orange county." >> as he dug deeper into k.cground, detective joey ramirez found more and more evidence k.c. was infatuated, even obsessed, with maribel ramos. for instance, the time maribel told k.c. he was too old for her and he responded by getting plastic surgery. $12,000 later he's got a different face? >> correct. >> and he says the reason he got it is because of the woman who's missing? >> correct. >> now here was k.c. at the public library google mapping a remote wilderness area. since the dawn of detective novels, killers have returned to the scene of the crime. but these days there's no need for the bad guy to even get in his car. now it can be done with the click of a mouse. the good guys still have to do it the old-fashioned way. detective sean hayden got the call on the radio. drive out to rustic majestic canyon southeast of the city of orange. >> we didn't know what to think. this is very rural area. no one would be out here mountain biking or hiking. this is way off the beaten path. >> at the other end of the two-

here's josh mankiewicz with the conclusion of "deadly exchange." >> reporter: markus kaarma was on trialng an unarmed teenager in his garage. the prosecution was about to argue that not only was the shooting unjustified, it was planned, premeditated murder. to prove it, they put the defendant's wife, janelle pflager, on the stand as a reluctant key witness. she told the jury the same thing she and the defendant had said all along. they were living in fear of intruders. >> literally every day i was like a paranoid person. i was looking over my shoulder all the time and very worried all the time. >> reporter: so then, why did they leave their garage door wide open on the day of the shooting? especially after they'd warned their neighbors to keep their garages locked? janelle said they smoked cigarettes in the garage, and wanted to air it out. >> i believe that it would be my right to have my garage door open to air out for a few minutes at a time especially when i'm there. >> reporter: the prosecution argued that janelle and her husband left the garage door open on purpose because they wer

here's josh mankiewicz with "the quiet one." >> sometimes the fresh air of a small town can hide a lot of dirty laundry. >> my worst fear was all of a sudden true. >> sometimes sudden death can lay bare every secret. >> she had felt like she was abusing it. >> what happened in this small town would tear apart a marriage, and at the same time, separate two families that were once united by love. boone, iowa, on flat land just north of des moines is a company town. headquarters for one of the largest grocery chains in the midwest. fareway. it's a family owned company, and rick beckwith is a third generation ceo. he and his wife cindy raised a family of five here. their youngest daughter emily, the sweet, but quiet one. kind of a shrinking violet? >> the oldest sister said that she never got spanked. >> she didn't. she just remained silent and look at me with those big, brown eyes, and it was over. >> even though emily was from a prominent wealthy family, her friend lisa says emily never flaunted it. >> everyone knew that emily was a beckwith, but i never felt less of a person in the pres

the face. [ laughter ] that must have been wild. [ laughter ] the other people on that i love, josh mankiewiczhe kind of has the -- kind of like a stuffy nose. he's always in aruba. it's like the guy killed someone in cabo san lucas, that's mine! like he always gets the best. then he always says, you could have a drinking game with this, every time he'll do this. most people, when they find a dead body in their house, they call 911. you didn't do that, did you? [ laughter ] [ cheers and applause ] i'll be driving around my car going, you didn't do that, did you? i do it with my kids now. you didn't clean your room, did you? then the other guy's dennis murphy. the guy, he has dennis murphy -- dennis murphy has this real kind of sing-song way of talking. but he always gets things -- he's like an old kind of news reporter, he always gets stories about like young kids. like murdering each other or something. so he'll be like, katie and cara were bffs. he goes, they had just bought the new album that just dropped and they were smoking kush and twerking. just trying to fit in. he's like, their lols

. >> here's josh mankiewicz with "frantic." >> reporter: christina morris was afraid of the dark. >> up through even, like, you know, grade school. you know, she woke up in the middle of the night. we knew about it because she was in our bed. >> yeah, you could hear the feet coming down the hallway. >> she was scared of the boogeyman. you know, boogeyman was going to get her one day. >> reporter: it was something she never really got over. >> 23 years old and she was still sleeping with a night light. >> always the bathroom light on. >> yeah. >> reporter: and it wasn't just the dark that scared christina. it was what might happen in the dark. >> christina had a fear her whole life that she would be taken. >> reporter: taken? abducted? >> yes. >> reporter: where'd this come from? >> i don't know. but her absolute worst fear is exactly what happened to her. how many people actually live their worst nightmare? >> reporter: from early childhood, christina morris' fears didn't slow her down. >> she's not one to sit in front of the tv and watch tv. she always has to be taking pictures or w