Oliver's boring blue beach bag is gone. Nate and his dog Sludge try to find clues to find the beach bag.

As Nate the Great sets to work on his first international case, he searches for a lost "something" and saves the King of Sweden from a troublesome traveler.

Nate the Great solves the mystery of the missing picture.

Tracking down missing persons as a way of purging lingering demons about a childhood friend who went missing, Sandy Shortt finds herself increasingly consumed by a growing obsession with understanding how and why people disappear.

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

When a baseball game is stopped because of a lost ball, Cam uses her photographic memory to find the ball.

The irascible A.J. Fikry, owner of Island Books, the only bookstore on Alice Island, has already lost his wife. Now, a rare book, has been stolen from right under his nose in the most embarrassing of circumstances. The store itself, it seems, will be next to go. One night upon closing, he discovers a toddler in his children's section with a note from her mother pinned to her Elmo doll: "I want Maya to grow up in a place with books and among people...

Trying to communicate with his human owner (and detective partner) can be frustrating for King the golden retriever as he uncovers clues in a missing dog case.

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

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.