"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 a deadlock. Did someone say DEAD? A trip through the Hall of Mirrors lets the kids escape HorrorLand and enter Panic Park. Safe at last! Or are they? Why are there no exits? What's in the Tunnel of Hate? Have they been tricked again?"--P. [4] of cover.

"What should Carly Beth be for Halloween this year? Terrified! Late at night, an ugly green mask is mysteriously calling out to her, and ugly green masks don't like to be ignored" (publisher).

Slappy the demonic dummy meets his match in a bride dummy of even worse design who, like her counterpart, comes to life to make everyone's worst nightmares come true.

"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.

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.

"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.

An illustrated, interactive story with a narrator who invites the reader to meet a vast array of pet monsters, such as the Yucky Mucky twins, and choose one to take home.

Julie begins to suspect that HorrorLand is not all fun after she is attacked by a giant spider.

Strange things happen when Greg starts using the camera he and his friends found.

Matt Daniels battles a mysterious substance called Monster Blood that makes things grow, and then visits HorrorLand amusement park, where some of his friends disappear.