Boone and Heather are going to summer camp, with man-eating snakes and disappearing campers. Things get worse when Boone joins eleven other guests at Horrorland because something's wrong with the bumper-car ride called the R.I.P.P.E.R.

"Jillian and Jackson freak out when they suddenly can read people's thoughts. But the trick turns to terror when the twins are stalked by a strange scientist who wants to know exactly what's on their minds. Will the twins ever lead normal lives again?"--Page 4 of cover.

When Marco finds a rare edition of the Ooze comic book at HorrorLand, he finds that many monstrous collectors would do anything to get their hands on the comic.

Returning to Egypt to help his uncle Ben and cousin Sari with an archaeological dig, Gabe learns about a curse that supposedly brings mummies back to life and thinks his uncle has become a victim.

After a new boy moves in next door, Hannah wonders if she's being haunted by a ghost next door.

"Chris and his twin, Meg, have a problem. It started the night before Halloween when the twins found a gang of bullies hassling someone in costume. The twins rescued the kid-only to find that it was a bald, pink alien who promptly swore allegiance to them. "Weirdo" is smelly and gross with a lot of disgusting habits, and the twins can't shake him. Little do they realize that their troubles are only beginning"--Publisher.

"Ray Gordon loves to scare his younger brother, Brandon. It's not hard considering Brandon is terrified of everything--loud noises, roller coasters, and especially the wooden dummy, Slappy, that Ray got from Jonathan Chiller's HorrorLand gift shop. In order to throw his big New Year's Eve party, Ray's parents make him promise to leave Brandon alone. But strange, mean-spirited things keep happening to his little brother, and Slappy always seems to...

While visiting his uncle, Dr. Deep, on a tiny Caribbean island, Billy goes exploring underwater, ignoring warnings to stay away from the coral reef, and is stalked by a half-human, half-fish predator.

Jessica and her best friend, Ryan, find the perfect HorrorLand souvenir --a two-headed coin with mysteriously dark powers. After an unlucky flip of the coin, they find themselves in a strange land being chased down by angry guards. HorrorLand was scary but this is much worse. Will they be able to escape?

Camp Nightmoon slowly changes from a fun place to one of terror.