Something evil made its way into the Preers’ peaceful neighborhood that morning. But what? Watch it all unfold tonight on an all-new 2-hour Dateline on NBC at 9/8c. | Dateline NBC

A nice little neighborhood. A beautiful spring day. And Leslie Preer... dead. Tonight at 9/8c, on an all-new Dateline with Blayne Alexander. | Dateline NBC

They had a life that seemed perfect. But beneath it all… a secret. Tonight at 9/8c on an all-new Dateline mystery. | Dateline NBC

Meet Chris. Part surfer dude, part do-gooder. His story tonight at 9/8c on a Dateline Weekend Mystery. | Dateline NBC

After that big nor’easter, Sandra hadn’t shown up for work. Where was she? Her story tonight at 10/9c on an all-new Dateline mystery. | Dateline NBC