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

"On a class trip to the birdhouse, Pinkalicious discovers that the parakeet has escaped and tries to bring the bird back home"--OCLC.

A tooth goes missing while Pete the Cat is helping the Tooth Fairy, and he must find it before it's too late.

Two turtles find a hat that looks good on both of them, but, with fairness in mind, they decide to leave it be, until night falls and one of the turtles changes its mind.

After a class trip to a floating zoo where animals are mistreated and Savannah's missing pet monkey is found in a cage, Long Island sixth-grader Griffin Bing and his band of misfits plan a rescue.

"When ten-year-olds Shirley and Jamila meet, Jamila is simply hoping for a friend in her new neighborhood but Shirley is a detective and together they seek a missing gecko." --

Biscuit the dog helps reunite a lost teddy bear with its owner.

A tiny minnow wearing a pale blue bowler hat has a thing or two up his fins in this underwater light-on-dark chase scene.

When Harry, the class pet, gets out while at Amelia Bedelia's school break, Amelia and her friends must find him.