When the Aldens go to the Pickering Natural History Museum to assist with the opening of a dinosaur exhibit, their work is hampered by a series of mysterious happenings.

Nancy sets off to find a long-lost engine that gets 200 miles to the gallon. The problem arises when they encounter a ghost that guards the machine.

Cam uses her photographic memory to track down a missing gift sent by Grandpa Shelton to Eric's father, who is finally graduating from college.

When she notices some bones missing from a dinosaur skeleton exhibited in the museum, a young girl with a photographic memory tries to discover who has been taking them and why.

Summer vacation on an almost private island gives the Aldens a challenge. Henry, Jessie, Violet and Benny used to live alone in a boxcar. Now they have a home with their grandfather and are spending the summer on their own private island. There is a mysterious stranger on the island with a secret--but that's not the only surprise in store for the Boxcar Children.

A million dollars, or a clue? Police report a break-in at an elite hotel, and the suspects sound suspiciously like Amy and Dan. There's a car and speedboat chase and an angry mob! When there's a Clue on the line, anything can happen.

Cam Jansen and her friends are volunteering at the local senior center talent show. They're having fun entertaining the guests and enjoying treats donated by Ken's Bakeshop. But during the show someone steals the wedding cake from Ken's truck outside. Can Cam use her photographic memory to solve the mystery before the wedding?

"You are on a sailing trip with your family and two of your friends in the Carribbean [sic]. One night you stop on the island of Antigua. Some children who live there tell you that the island is haunted by a ghost. They are going to spy on the ghost as soon as the sun set. Should you go with them, or go by yourself to meet this ghost? Are you brave enough for Ghost Island?"--Page 4 of cover.