Scott Harmon and his friend Amanda Gold are very easily frightened, much to the amusement of his younger sister Rita. But as Halloween approaches, Scott becomes determined to get over his fears. Having discovered a strange mask in an apparently haunted house that, when worn, makes it appear that weird things are happening, Scott plans to spend the night in the house and scare some of the local bullies. However, thanks to the mask and the ghost of its former owner, things don't go quite as planned...
Not to be confused with the Give Yourself Goosebumps entry, Trick or... Trapped!.
This book provides examples of:
- Adults Are Useless: When Scott's mom sees the video of a bully made, she just laughs at it and comments on how Scott looked scared when he denies being frightened.
- Annoying Younger Sibling: Rita, who is the typical type that plays pranks on Scott.
- Covers Always Lie: The cover features a zombie hand holding a trick or treat bag. This has nothing to do with the story.
- Gang of Bullies: Mickey, Morty, and Kenji make up a group of bullies that always bothering Scott and Amanda. There is the usual pranks, as well making them do random dares.
- Goofy Print Underwear: Scott gets pantsed by one the bullies, revealing his Hello Kitty underwear.
- Evil Mask: The mask in this book has the power to put you into an alternate world, and the ghost Lillian was trapped inside it. It needs someone in there so when she escapes it, she tries to trap Scott inside it too.
- Here We Go Again!: They defeat Lilian but it's implied she possesses Scott's younger sister.
- Instant Humiliation: Just Add YouTube!: The bullies film a prank they play on the protagonists and put it on Youtube.
- Mythology Gag: Amanda has a dog named Curly, possibly a reference to the old Goosebumps mascot of the same name.
- Not Hyperbole: Scott gets a visit from is strange aunt Ida, who says she is a restless spirit. It's actually an evil ghost named Lillian, who is literally a restless spirit.
