HorrorLand is full of scary rides and adventures.

Billy and Sheena go with their Uncle, Dr. Deep, to search for treasure and are pursued by pirates who have been dead for two hundred years, and when Billy and Sheena return to land and visit Horrorland they encounter their worse fears.

Andy, Sam, Jessica, Meg, Marco, and Ray are trapped by Jonathan Chiller, who expects payment for the rare HorrorLand souvenirs they have taken by playing his deadly game.

"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?"--Back cover

Boone and his younger sister Heather are excited about spending the summer at Camp Hither, and at first they dismiss the horror stories about snakes that one camper is spreading, but then strange things start happening.

"Rowan: I'm in the business of creating fairy tales. Theme parks. Production companies. Five-star hotels. Everything could be all mine if I renovated Dreamland. My initial idea of hiring Zahra was good in theory, but then I kissed her. Zahra: After submitting a drunk proposal criticizing Dreamland's most expensive ride, I should have been fired. Instead, Rowan Kane offered me a dream job. The catch? I had to work for the most difficult boss I'd ever...

Lizzie and Luke have uncovered secret information about the freaky amusement park. Lizzie wants to help the others but since the twins don't trust her, they're all in deadlock. Did someone say "dead?"

At HorrorLand, every night is Halloween, and those monster masks, well, they aren't masks at all. Carly Beth is in for a fright of a night.

The Haunted House ride at Fun City is rumored to be haunted by the ghost of someone who died there, and when Samantha "Sam" Archer and her friends get trapped inside they need to find the truth.

Abby and Peter's visit with their Uncle Jonathan is spooky enough, but things get even stranger when they become involved with a mystery at HorrorLand.