On Halloween, Scooby-Doo and the gang are helping out with an auction in the fancy Brickstone Hotel, and things get batty when a vampire swoops in and steals a magical jewel from Transylvania.

Scooby and the gang investigate when their efforts to make cupcakes for the school bake sale are complicated by a meddling ghost.

"It's Halloween in Coolsville and Scooby and the gang are invited to a super-groovy Halloween party!"--P. [4] of cover.

A scary Scooby marionette snatches a diamond necklace off the neck of a famous Olympic ski champion.

Shaggy and Scooby are on the case when a phantom dog kidnaps a toy poodle who is about to compete in a dog show.

Scooby and Shaggy think the woods are haunted when the gang goes on a camping trip.

The reader is asked to help Mystery, Inc. solve a case involving vandalism and a kidnapping by a cyclops at Camp Sakasnaks.

When the gang enters a spooky New Orleans mansion in search of a phone, they encounter some strange sights and characters--and the reader must help them figure out just what is going on.

"Witches are on the loose in Salem, and they're wreaking havoc at the annual costume contest! The Mystery Inc. gang is supposed to be judging the contest, but first they need your help to solve a spooktacular mystery and save the town. Will the gang choose the right path or find themselves at a dead end? Should they follow the witches or flee Salem for good? Will there ever be a costume contest winner?"-- Back cover.

During an airshow Scooby-Doo and the Mystery Inc. gang encounter a haunted World War II bomber plane--and it is up to the reader to decide how the mystery unfolds.