All Night Party is a novella written by R. L. Stine. It was first published in 1997 and is the forty-third book in the Fear Street book series.
Description[]
It's Cindy's birthday, and her friends are throwing her a surprise party on Fire Island. It's a private party -- no parents, no cops...in fact, no one around for miles.
Except there's a madman loose on the island. A murderer who quietly crashes the party.
And he wants to dance with the birthday girl...