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....

The party room.

On Manhattan's Upper East Side. Everybody's fabulous. No one gets carded. Then someone dies.

The Party Room is where the prep school crowd goes to drink up and hook up. The cocktails are chill and the bartender's hot. Everyone knows everyone -- except the guy that Samantha Byrne leaves with one night.

The next day Sam's missing. Then she's found dead in Central Park, murdered brutally. It looks like a copycat killing of another girl who was murdered years earlier. By someone from Talcott Prep.

The killer is one of them. He knows where they live. And where they play....