Nate the Great and his dog Sludge look for Annie's housekey which has mysteriously disappeared.

Nate and his dog Sludge are determined to find the recipe for his mother's monster cookies.

Nate the Great goes to San Francisco to solve a mystery with his cousin, Olivia Sharp, who is also a detective.

When Maria finds the lost key to the city playground, the entire population wants to know who, what, where, when, why, and how of the discovery. Soon, children and adults alike are wrapped up in the hand-clapping, rope-jumping, high-swinging celebration.

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

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

Splurge becomes attached to the fuzzy blue "friend" he finds floating in the water and is unhappy when he cannot find it one morning.

When Pat, Mom, and Dad mysteriously lose some of their things, the family dog helps find them.

A little girl encounters various animals before finding her cat.

Big Max, the world's greatest detective, must travel to the land of Ah-Ah-Achoo to find the king's missing pet giraffe.