Two twelve-year-old detectives solve a series of mysteries, using sketches of important clues.

When a special autographed basketball is stolen, Cam Jansen uses her photographic memory to identify the thief.

On Green Day, Cam and her classmates discuss ways to protect the environment, but when money collected for the school's new skylights disappears, Cam uses her photographic memory to solve the mystery.

While searching for his mysteriously lost human family, Buddy the dog is adopted by another family and helps solve the mystery of their missing boy.

The Alden children are helping out at a radio station, and they're going to be actors in a live mystery show. But when strange things keep happening, people in town say the station is haunted. Can the Boxcar Children catch the radio ghost before the station's listeners are scared away?

Puzzle-crazy, twelve-year-old Winston and his ten-year-old sister Katie find themselves involved in a dangerous mystery involving a hidden ring. Puzzles for the reader to solve are included throughout the text.

From Newbery Medalist Avi comes the spine-tingling story of Tony Gilbert, who must solve a mystery surrounding the ghost of his uncle Charlie. For most of Tony Gilbert's life, he always thought of his uncle as 'Weird Uncle Charlie.' That is, until Uncle Charlie moves in with Tony and his family. He's still odd, of course-talking about spirits and other supernatural stuff-but Uncle Charlie and Tony become fast friends. Between eating ice cream and...

Paul Marconi and his two friends are amateur detectives and find their biggest case when their neighbor wakes up to lawn full of rubber duckies. The kids set out to discover the culprit.

"Uncle," Croissant said, "the fridge is in trouble! A mystery stench turned a whole shelf to rubble! I'm the last hope or the fridge will be lost! Help me or else we'll be cooked, served, and sauced." There's a stinky stench in the fridge-and our favorite foodie friends must solve a smelly mystery! Sir French Toast's nephew, Inspector Croissant, begs him and Lady Pancake for help in finding the source of the foul odor. Could it be the devious Baron...

The extraordinary orphans must figure out who framed the ringmaster of the flea circus, and all signs point to Nicholas Rattigan, the children's previous captor.