When a simple round of truth or dare spins out of control, three girls find it's no longer a party game--it's do or die. It all started on a whim: The game was a way for Tenley Reed to reclaim her popularity, a chance for perfect Caitlin "Angel" Thomas to prove she's more than her Harvard application. Loner Sydney Morgan wasn't even there; she was hiding behind her camera, as usual. But when all three start receiving mysterious dares...