Bear Detectives, Jan and Stan Berenstain

Big Max, Kin Platt

Case of the Cat's Meow, by Crosby Bonsall

Case of the Double Cross, by Crosby Bonsall

Case of the Dumb Bells, by Crosby Bonsall

Case of the Hungry Stranger, by Crosby Bonsall

Detective Mole and the Secret Clues, Robert Quackenbush

Henry and Mudge and the Sneaky Crackers, Cynthia Rylant (Series)

Missing Dinosaur Bone, by Jan and Stan Berenstain

Mr. Sniff and the Motel Mystery, Thomas Lewis

Rollo and Tweedy and the Ghost a Dougal Castle, Laura Jean Allen

Thanksgiving Mystery - A Scooby Doo Mystery

The Mystery of the Pirate Ghost, by Geoffrey Hayes

Young Cam Jansen and the Baseball Mystery, David Adler (Series)