THE PARTY ROOM. On Manhattan's Upper East Side. Everybody's fabulous. No one gets carded. Then someone dies.Kirsten is still recovering from the death of her best friend, Samantha. And trying desperately to forget that she hooked up with Kyle—before she knew he was the Prep School Murderer. Kirsten's out every night hitting the clubs and the Party Room. She's partying hard to forget the pain. Then one night in the Hamptons, Kyle shows up. He tells Kirsten a different story. He's not the one who killed all those girls. Kirsten wants to believe him. But then, it's too late....