>> so k.c. joyut of that police station like all the other men in maribel's life, a free man. >> coming up -- >> he knew a lot more than he was telling us. >> finally, the clue they had been waiting for. you won't believe how they got it. >> no one had searched there? >> no. >> but he's looking at it? >> yes. >> when "dateline extra" returns. because clean food is food as it should be. with no artificial flavors, preservatives, sweeteners, and no colors from artificial sources. we think clean food tastes better, feels better, does better. 100% of our food will be clean by year's end. every bite will be food as it should be. ♪ myand a partly sunny mode.de. and an outside to inside mode. transitions® lenses automatically filter just the right amount of light. ask for transitions xtractive lenses. extra protection from light... outdoors, indoors and in the car. good luck with the meeting today. thank you. as our business is growing, and you're on the road all day long, it's exhausting. holiday inn has

was it used by mirabel or k.c. joy? nobody knows. >> all true. omputer searches were enough for the jury. >> we the jury in the above entitled action find the defendant, quanto joy guilty of the felony to wit. >> k.c. joy was found guilty of second degree murder. after which he told me the jury got it wrong. >> are you dangerous? >> me. i'm the perfect most honest guy there is. i'm most gentleman. >> k.c. says he wants a new trial to prove he couldn't have killed mirabel, his quote best friend. >> you had a crush on her. >> absolutely not. i always maintained that we are platonic friends. >> you never told lucy you had a crush on her? >> no. i never said. >> never said you were in love with her? >> never said that. >> you weren't obsessed with her? >> no, i was not obsessed with her. >> the plastic surgery? his choice, he say, not done for mirabel. and the computer search in the area where mirabel's body was found, k.c. says he didn't do it, somebody else did by remotely accessing the same computer right after he used it. >> you don't think that's

now ramirez knew it was time for one last meeting with k.c. joy> thanks for coming down here voluntarily. i appreciate it. >> all right. going to get me right back to the library, then i'm going to have to walk. >> ramirez didn't tell k.c. that maribel had been found. he trust tried for the final time to get k.c. to be the one who would say what had happened. >> k.c., i think that you have the answers in your heart that you do and you should share them. >> so once again, k.c. joy walked out of the interview room. he didn't get far. this time he was arrested and charged with the murder of maribel ramos, the woman he had loved who had not loved him. when he was taken into custody, k.c. joy was wearing maribel's dog tags. k.c. joy pleaded not guilty. in july 2014, a year after maribel vanished, he went on trial for her murder. >> maribel ramos. she's no longer with us. >> the prosecution laid out the evidence against k.c. the unrequited love, the scratches, the 911 call. and finally the computer searches. >> he's wondering how close is maribel's body

k.c. joy. >> his full name is kwan -- from what i understand is kwanchol joy. >> weren't you out drinking the other night and had an argument? >> k.c. said it was just an argument. >> i don't like you, i'm not attracted to you. i said, what's the problem? >> what was the problem? the detectives heard from her family something interesting. k.c. joy had wanted to be more than roommates with mirabel ramos. >> when did it become apparent to you k.c. had a crush on your sister. >> he called me and said, i'm like in love with your sister. >> because you knew your sister wasn't in love with him? >> yes. it's a bad situation. at that point, i'm like, k.c., you're a good man and i'm sure you'll find somebody out there for you. >> but it's not going to be her? >> yeah. >> now, the woman k.c. told he wanted had told him not only did she not love him but he had to basically get out of her life. despite that, k.c. continued talking with police. >> mr. joy was being cooperative? >> he was. >> talking to off