Dink and his friends investigate why pets, like Mrs. Davis's canary, Mozart, are mysteriously disappearing all over town.

Someone lost a camera, and Franklin found it. Is it "finders keepers," or should Franklin try to find the owner?

When her best toy mysteriously disappears, Olivia the feisty pig is determined to find out who is responsible.

Penny feels guilty after taking a beautiful blue marble that she sees in Mrs. Goodwin's grass, but gets a pleasant surprise when she goes to return it the next day.

A bear almost gives up his search for his missing hat until he remembers something important.

Even Mr. Bungles the teacher sometimes has a day when, no matter how hard he tries, everything seems to go wrong--including allowing the class hamster, Nibbles, to escape.

Froggy and his father search the house for the mislaid items they will need on their bike trip.

Molly claims to be too busy to tidy up when she makes a mess, but things change when Grandma invites her for a sleepover and she cannot find her Sloppy Bear.

From the bestselling author of the generation-defining series The Baby-sitters Club comes a series for a new generation! It is a big mystery.Karen can do lots of great tricks with her new yo-yo. But when she takes it to school to show her friends, the yo-yo shows Karen a brand-new trick. It disappears! It is not magic. Somebody has taken Karen's yo-yo. And Karen is going to figure out just who the meanie-mo is. Ann M. Martin is the creator...

While traveling with her family to Holland to visit her grandparents, Trixie once again loses her beloved Knuffle Bunny.