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

Half-fairy, half-vampire Isadora Moon goes on a family camping trip to the beach and loses her father's heirloom comb.

When Horrible Harry's pet cat, Googer, sneaks a ride and gets into the school building, third-graders Harry and Doug have to catch him before anyone else does, which means going into some forbidden places.

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.

While Jenn is seeking Prudence, her big, sleek and shiny, black and white dog, she meets and falls in love with Roscoe, a scruffy little golden dog.

A little girl and her favorite dress have extraordinary adventures together, but when the girl emigrates from Greece to the United States they are separated, and the dress travels the world searching for her.

During a trip to Oregon, the Aldens are astonished when Watch discovers a backpack filled with valuables, a finding that compels them to learn what happened and return the backpack to its rightful owner.

Upon finding a toy rabbit in the forest, Bear tries his very best to return it to its home but by the time its owner appears, Bear has become attached to Bunny.

Taking a turn caring for the class pet hamster, Marion is devastated when the hamster goes missing and she receives an anonymous letter in her locker with clues leading to a mysterious scavenger hunt.

When you're an identical twin, your story always starts with someone else. For Iris, that means her story starts with Lark. Iris has always been the grounded, capable, and rational one; Lark has been inventive, dreamy, and brilliant--and from their first moments in the world together, they've never left each other's side. Everyone around them realized early on what the two sisters already knew: they had better outcomes when they were together. When...