At Green Lawn Elementary, the entire school becomes involved in a mystery when Mr. Bones, the skeleton in the nurse's office, disappears.

Thor's hammer is missing again. The thunder god has a disturbing habit of misplacing his weapon--the mightiest force in the Nine Worlds. But this time the hammer isn't just lost, it has fallen into enemy hands. If Magnus Chase and his friends can't retrieve the hammer quickly, the mortal worlds will be defenseless against an onslaught of giants. Ragnarok will begin. The Nine Worlds will burn. Unfortunately, the only person who can broker a deal for...

"When the letter B goes missing from the story, the reader must find a way to bring it back into the book for good"-- Provided by publisher.

When they are separated for the first time since birth, Iris and Lark struggle with insecurities over their individual identities at the same time things begin to go missing around town.

Kayla's cat, Daisy, is missing. Kayla is so worried. She calls her friends, and soon enough the entire Pet Club is on the case.

Corduroy the teddy bear sets out one night to find a birthday present for his owner, Lisa, but soon realizes that he cannot find his way home.

While at Waggle World, an amusement park for pets and their owners, Tuckerbean experiences the delights and terrors of a fun house when he wanders away from his master, Peni.

When a wolf cub and little girl are lost in a snowstorm they must find their way home.

With her kitten, Moisturizer, missing and having fought with her best friend, Margaret, eight-year-old Clementine finds it hard to concentrate on doing her best as her classmate's Friend of the Week.

In 'Who's in Charge' Stella gets a lesson in responsibility when she volunteers to watch her best friend's dog, Bella, for a few days. The only problem with this plan is that Stella didn't ask her mother for permission. With new baby Marco at home, Stella's mom already has her hands full. But Grandma agrees it's good for Stella to have some responsibility as she's getting older. It looks as though Stella has things under control. It's only for a few...