tell me where s the evidence, all of that. it wasn t well received at all. finally, the break they needed. we got the match. leading to one of the greatest twists of all time. you could not have shocked me more. what really happened in the middle of the night. thanks for joining us, i m lester holt. in some of the most difficult murder cases there just aren t any suspects. in this story, there were plenty, but it would be years before technology and one determined woman would help reveal who the killer really was. and in a case that started out with so many possibilities, no one would believe how it ended. here s josh mankowitz. reporter: it was a saturday morning in october, 1984, when sheila s phone rang. it was a girlfriend. she said that there s been an accident. reporter: an accident involving sheila s good friend, freshman roommate and fellow student at southern methodist university, angela samoda. i initially thought that angie had been in a car acc
investigator and i need you to tell me where s the evidence, all of that wasn t well received at all. finally, the break they needed. we got the match. leading to one of the greatest twists of all time. it could not have shocked me more. what really happened in the more. what really happened in the middle of the night. captions paid for by nbc-universal television thanks for joining us. i m lester holt. in some of the most difficult murder cases, there just aren t any suspects. in this story, there were plenty. but it would be years before technology and one determined woman would help reveal who the killer really was. and in a case that started out with so many possibilities, no one would believe how it ended. here s josh mankowitz. sheila s phone rang. they said there had been an accident. an accident involving sheila s good friend, roommate, and fellow student. angela samota. i initially thought angie had been in a car accident. i went through the is