mirabel ramos had vanished.er friends and family mounted a full-scale search, as in many investigations police were turning up the heat on the men in maribel's life. but then news that a phone call had been made to 911 by maribel, and she sounded scared. did this confirm the family's worst fears? josh mankiewicz picks up the story, "mystery in orange county." >> this is the city of orange, california, in the county of orange, california. much of it is a small town stuck in time. there's a university, a zoo, cute local businesses and a police department that doesn't have to deal with a lot of violent crime. after all, the happiest place on earth is just down the street. but in may 2013, detective joey ramirez was far from happy. he had a lot of ground to cover and a strong sense that time was against him as he tried to figure out what had happened to mirabel ramos. >> she just vanished? >> yes. >> how often does that kind of thing happen? >> it doesn't happen often. >> ramires started by investigating the men in

. >> this is mirabel ramos. is no longer with us. >> the prosecution laid out the evidence against k.c., the unrequited love, scratches, the 911 call and finally the computer searches. >> he's wondering how close is mirabel's body to where they're doing that awareness search. that's why he goes to google maps. >> the defense pointed out there was no dna, fingerprints, cell phone info or standard forensic evidence that tied k.c. choi to mirabel's murder or the crime scene. >> we don't know what happened. what kind of force was used against her? nobody knows. who used it first? nobody knows. was there a weapon used? was it used by mirabel or k.c. joy? nobody knows. >> all true. but the computer searches were enough for the jury. >> we the jury in the above entitled action find the defendant, k.c. joy guilty of the felony. >> 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

. >> from mirabel? >> yeah. >> that's all for this edition of "dateline extra." i'm tamron hall. thanks for watching >>> due to mature subject matter, viewer discretion is advised. >>> the sewer rats will get drunk. >> inmate-made alcohol leads to a disruption. a crackdown on illegal cell phones could interfere with one inmate's plans to be married. >> don't cry. >> correctional officers go in hot pursuit of other forms of contraband. and with personal cameras provided by our producers, inmates show private moments. >> this is my girlfriend, jodie. she's solid. >> i wasn't nice at all. i used to collect for dope dealers and store guys and everyone else in here that made money. i used to get half. that was my hustle. get me half of what he owed you and i'll collect it up for you. i didn't care how bad i had to hurt the guy. the guy could have been a friend of mine. i didn't care. business is business, friends is friends. i'd send you to a hospital, no sooner you come back, smoke a joint, drink a jug of homemade wine with you right afterwards. like i said, business is business. fri