You just see things. Ridiculously out of control. Tonight we take you into a secret world thats going to stun you, teenagers, social media and murder. Well, shell blackmail me. A clique of mean girls. Were they mean enough to kill . It was such a shocking and scandalous kind of case. This was diabolical. Evil comes in all shapes and sizes. Im lester holt, and this is date lionel line. In the gentle Rolling Hills of northern west virginia, in a sweet college town in the heart of coal country lived three teenage girls. Their photos capture a moment in time. They were smart, talented, lovely. Everything a parent could hope for in a daughter. And so who could have guessed just by looking that some of them carried a dark secret about a friend. 911. Do you have an emergency . I have a 16yearold daughter. She hasnt been home, hasnt went to work. Im scared to death. These teens played a straij and haunting game. Would you rather suffocate or get shot . Get shot. A game of betrayal that went wa