christopher waide! christopher waide! just admitted he killed her! >> reporter: did you think at all how amazing it was that your son and other friends were able to get him to say he did it? >> they cracked the case. they did. >> reporter: coming up, it's still a case without a corpse. >> step three, we bury the evid >> reporter: did this real life professor teach chris waide just that? >> his efforts to clean and purge the crime scene, those are things he could have learned right there in my class. >> reporter: how waide may still hiding. i am. for people with hearing loss, visit sprintrelay.com ? if you love caramel, then you'll love all the ways we're finding to make you love it even more. so we always have the one that makes you feel like someone very special. werther's original caramels. ? this artoo unit must be delivered to the rebellion. come on artoo! ? artoo! this is for you. duracell and children's miracle network hospitals on issues that matter to northern virginia, barbara comstock and donald trump have a lot in common. bill o'reilly: ov

christopher waide! christopher waide! just admitted he killed her! >> reporter: did you think at all how amazing it was that your son and other friends were able to get him to say he did it? >> reporter: coming up, it's still a case without a corpse. >> step three, we bury the evidence. >> reporter: did this real life professor teach chris waide chris waide just that? >> his efforts to clean and purge the crime scene, those are things he could have learned right there in my class. >> reporter: how waide may still i'm not hiding. i am. for people with hearing loss, visit sprintrelay.com ? if you love caramel, then you'll love all the ways so we always have the one that makes you feel like someone very special. werther's original caramels. come on artoo! ? artoo! welcome to the rebellion. ? this is for you. duracell and children's miracle network hospitals new at steak 'n shake! 24 meals under four dollars. and fresh guacamole made from scratch. get 24 meals for under four dollars. >>> doubt. >>> doubt. that's how you get away with murder. >> reporter:

christopher waide killed a 19-year-old woman, cleaned his apartment and disposed of the body. he later admitted to it but called it an accident. his criminology professor now >> police and also robert wells, his instructor, believe he learned a lot about cleaning up the crime scene, about how to face an interrogation, by being in that class and just reversing roles after he took the class. toya: owade peek -- waide speaks for the first time from prison tonight on "20/20" at 9:00 and then watch 12 news at 10:00. patrick: there's talk of a major deal between at&t and time warner. the deal could happen as soon as this weekend. it would give at&t programming control of networks like cnn, hbo and the cartoon network. time warner is the parent company of cnn. neither department has commented. news of the possible deal sent time warner stocks soaring nearly 10%. toya: now a look at what's coming up at 6:00. joist has a look at that. joist: a -- smearing peanut butter outside what she thought was a trump rally. then it's the sweater that has most everyone talking today them message aa

. >> even with that confession, christopher waide was offered a plea deal that ended with a 48- year sentence. that could have been a little longer, but lee's body still has not been found. >>> five students and a bus driver were recovering tonight. with three other cars, look at your screen, this happened at fox and 39th this afternoon. one of the other cars lost control hitting that bus taking 34 denver montessori juniors and seniors home today. none of the injuries were serious. >>> man look at this haze over a town north of kansas city. its especially troubling considering it's all from a chemical spell. -- chemical spill. in all more than 100 people had to go to the hospital, but tonight it is safe for them to go back outside. >>> who started the beaver creek fire north of walden, we don't know the suspect's name becauseethey're under 18. but this huge fire you see right here has been burning for more than four months because of how remote this area is. >>> a big step to get the junkins fire under control. the nearly 18,000-acre fire in custer county is now 33% because of this f