A five-year-old boy searches high and low for his missing dinosaur, and the people he asks for help do not believe such a creature actually exists.

Struggling with Asperger's, Rose shares a bond with her beloved dog, but when the dog goes missing during a storm, Rose is forced to confront the limits of her comfort levels, even if it means leaving her routines in order to search for her pet.

The reader is asked to help Nate the Great solve the mystery of his friend Annie's missing dog Fang.

While traveling with her family to Holland to visit her grandparents, Trixie once again loses her beloved Knuffle Bunny.

The New York Times bestseller—for fans of All the Light We Cannot See and The Tattooist of Auschwitz!
Three women. One daring mission.
1946. One morning while passing through Grand Central Terminal, Grace Healey finds an abandoned suitcase tucked beneath a bench. Inside is a dozen photographs—each of a different woman. Grace soon learns that the suitcase belonged to Eleanor Trigg, leader of a network of female...

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

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.

When Little Critter searches for his missing sock all over the house, the yard, and the neighborhood, he is surprised by all the lost treasures he finds during his hunt.

As Waldo and his buddies look for everything from a lost key to a lost camera, the reader is invited to work a variety of activities, including spot-the-difference, mazes, memory games, word games, doodles, and tangled line teasers.

Percy does not want to share with his little brother and when his Mighty Man toy goes missing he accuses his brother of taking it.