When three leprechaun statues disappear just before St. Patrick's Day, Bradley, Brian, Nate, Lucy, and other friends follow clues in order to prove that Lucky O'Leary is innocent of the crime.

Thor's hammer is missing again. The thunder god has a disturbing habit of misplacing his weapon, the mightiest force in the Nine Worlds. 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. Unfortunately, the only person who can broker a deal for the hammer's return is the gods' worst enemy, Loki,...

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

Annie searches the neighborhood for her red mitten, the fifth she's lost this winter.

When Boof the bear loses his lucky leaf, he runs into porcupine Pine who helps him look for this lost item, but Boof finds something more important than the leaf.

During Spring Break, mystery lover Amy looks for clues to the disappearance of wealthy Ms. Sullivan's Saint Bernard puppy.

Junie B. Jones experiences glee while showing off her new furry mittens in kindergarten, but disaster strikes when they disappear from the playground.

Eight-year-old Lucas, Prince of Wrenly, is eager to explore and Clara, daughter of the queen's seamstress, knows the kingdom well, so they team up to find a lost jewel and visit all of the land's main attractions as they search.

When second-grader Eugene's favorite comic book goes missing, he blames his best friend Charlie even though he has no evidence.

A famous author is coming to visit and Eva and her classmates are assigned to write a story--but Eva Wingdale is totally distracted because her pet bat, Baxter, has gone missing, and she suspects that the sneaky squirrels have something to do with her missing pet.