We take you inside a secret world thats going to stun you. Teenagers, social media and murder. She was like, well, shell blackmail me. A click 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 dateline, Andrea Canning with something wicked. 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 and hasnt been home, hasnt went to work. Im scared to death. These teens played a strange and haunting game. Would you rather sufficient indicate or get shot . Went beyond teenage drama. Why, why, why . At