Young Detective Jeffrey Bones investigates the disappearance of the plastic dinosaur his grandfather just bought for him in a museum gift shop.

Polar Bear has lost his underwear and he asks his friend, Mouse, to help him find it.

When a wolf cub and little girl are lost in a snowstorm they must find their way home.

Nate the Great investigates the mysterious disappearance of the purple plastic octopus that his baseball team uses for second base.

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

In Mother Nature's realm, sisters Autumn, Winter, Spring, and Summer are nature's royalty, responsible for each magical turn of the seasons, but Autumn has lost a special gift from Mother Nature and her siststers must help her find it.

"When her dog disappears into the gutter of the book, Bella calls for help. But when the helpers disappear too, Bella realizes it will take more than a tug on the leash to put things right"-- Provided by publisher.

A child and dog search for a lost pet, Mister Kitty, as the child describes what Mister Kitty looks like to the reader.

At Green Lawn Elementary, the entire school becomes involved in a mystery when Mr. Bones, the skeleton in the nurse's office, disappears.

"Una mañana de sábado, los hermanos Ratón salieron en busca de aventuras. Iban los tres muy risueños: el mayor, el mediano y el pequeño. Junto al borde del sendero, encontraron un reflejo, como un pedazo de sol. Era una llavecita dorada. Y con ella... ¿qué se podría abrir? A veces buscamos fuera y lejos, perdiendo de vista lo más importante: lo que se encuentra dentro y cerca de nosotros." -- Page 4 of cover.