Penny feels guilty after taking a beautiful blue marble that she sees in Mrs. Goodwin's grass, but gets a pleasant surprise when she goes to return it the next day.

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

"Splat notices that his favorite wooden ducks keep going missing--can Secret Agent Splat solve the mystery?"-- Provided by publisher.

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

Nate the Great investigates the disappearance of a homemade pillowcase belonging to Rosamond's cat Big Hex

This book is a quiet story of treasure lost and found, and the beautiful developing relationship between a black crow and a curious child. A crow watches from afar as a child collects a unique assortment of curios in a secret hideout: a thimble, a button, a ribbon. When a storm hits and scatters everything, the child must search for the beloved items again. The crow returns one of the lost items, and in return the child offers something else. Together...

Nancy and Douglas, determined to learn what is on the other side of a fence, try Nancy's plans to launch, vault, and fly Douglas over, then succeed with Douglas's simple idea.

"It's the third day of summer vacation, and Lark's halmoni--that's Korean for grandmother--has promised to take Lark and her twin brother, Connor, to the library. The only trouble is, they arrive to discover that Mrs. Robinson, the town librarian, has lost her key. Can rookie detectives Lark and Connor solve the mystery of the missing key?"--Back cover.

Siblings Evan and Jessie must solve the mystery of a missing cherished family treasure while coming to terms with their beloved grandmother's unsettling behavior.

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