mystery and detective stories

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

While vacationing at her grandfather's island home, Jesse meets an unusual girl and together they find mysterious objects that provide clues to understanding the past and the present.

During a summer vacation on Long Island, Harriet runs into a mystery. Somebody is sending notes to everyone in town.

Twelve mystery cases for readers to solve, with solutions provided in the back of the book.

While visiting the toy and game fair on planet Izz, Jeff and Norby search for a missing robot and the villain responsible for sabotaging the planet's computer system.

Contains seventeen mysteries for the reader to solve, with explanations and solutions in the back of the book.

Susannah and her friends try to figure out who put the poison in their trick-or-treat candy at the Eucalyptus Arms apartments.

The cousins discover a stranger sneaking into the local dump. Broken things start disappearing all over town, and then, reappearing, repaired and refurbished.

When the sixth grade decides to film a monster movie as a class project, the camera reveals something unexpected.