College students gather at Lakehouse for an '80s murder mystery party. I didn't know that a crazy killer had joined. Can anyone survive this cruel summer as bodies pile up?

A group of college students plan one final pre-graduation party at a secluded lake house for an "80s murder mystery" weekend unaware that a crazed, masked killer has decided to join the celebration. Will anyone survive the slaughter - or is this going to become a truly cruel summer?