The Hardy brothers try to find out who is behind a rash of automobile thefts that are occurring on Shore Road just outside of Bayport.

"Almost-eleven-year-old Josephine is NOT pleased to be moving into the Happy World trailer park over the summer of 1974. Happy World isn't happy. It's dingy and depressing! Nothing like the world that headstrong Josephine wants for herself. But when Josephine learns that her would-be next door neighbor in Happy World was kidnapped months ago, she develops a begrudging interest in her new home. A kidnapping is exciting-and all signs point to Josephine...

When the Hardy Boys set out to solve the mystery of their missing chums, they discover a gang hide-out in a cave on an island along the way.

Pets. Mina doesn't have any. This is super inconvenient when it's Showcase Your Pets week at school. Unfortunately, Mina's best friend Holly doesn't have any pets either now that her hamster's gone missing. And has anyone seen Danny's pet toad? An explosion at the local pet shop shows Mina that this pet palaver can't be a coincidence. But why is someone stealing all the animals? What do they want them for?