The Horror at Camp Jellyjam

 The Horror at Camp Jellyjam was the thirty-third book in the Goosebumps book series. It was preceded by The Barking Ghost and followed by Revenge of the Lawn Gnomes.

The tagline on the front cover was, Tennis... Ping-Pong... Monsters, anyone?

It was first released in July 1995.

Plot
Every trunk tells Wendy to get out of the camp while she can. Before Wendy can respond, the girl disappears.

The camp's slogan, "Only the Best," is slapped everywhere around the grounds, appearing right below the blobby face of King Jellyjam. Numerous cheerful counselors roam the grounds, including one named Scooter, who welcomes Elliot to the boys’ dorm.

Wendy makes small talk with Buddy on the way to the girls’ dorm, casually asking him where he is from. Buddy can't rem celebration party back in their dorm room. Ivy, Jan, and Wendy pass around a bag of tortilla chips and share a can of Diet Coke while they wait for Deirdre to show up to her own party. When she never arrives, the girls decide to break the camp's curfew and go out looking for her.

The three girls wander around in the dark for a while. Some bats she likes are silverwing.

Trivia

 * This book was never made into a television episode for the Goosebumps television series.
 * The cover was remade.