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

King's human, Kayla, has baked some treats for a friend's new puppy, Thor, but some go missing and it is up to King to find the culprit.

After Trixie and daddy leave the laundromat, something very important turns up missing.

When a bear loses his bright red scarf in the woods, it is found--and lost again--by a series of animals that use it to keep warm or to have fun, but they disagree over who really owns it.

"Third-grader Aven Green has been solving mysteries for a whole month, cracking such cases as The Mystery of the Cranky Mom. But can this perceptive detective solve two cases at the same time? First her teacher's lunch bag disappears. Then Aven's great-grandma's dog goes missing. Fortunately, since Aven was born without arms, all the "arm" cells went to her super-powered brain instead. (That's her theory.)"--

When a weird blue chicken comes to Chicken Squad headquarters for help, siblings Dirt, Sugar, and Sweetie help find her missing house.

When his toothbrush goes missing, Dog's friends help him look for it.

While on an underwater adventure seeking sunken treasure, Flat Stanley finds a dolphin trapped in a net.

"A mermaid and her otter friend go on a journey to help a lost beluga whale return to the Arctic"--