Sly the Sleuth, also known as Sylvia, solves three mysteries for her friends and neighbors, all involving pets, through her detective agency, Sleuth for Hire.

"Nancy, George, and Bess are attending a three-day overnight camp at the local zoo. They'll get to spend lots of time with all of the animals and learn about them, too. The best part is, they will be helping the zookeeper make toys for the animals, just like real staffers! But when the toys the girls make by day are disappearing at night, it looks like everyone is a suspect! Can Nancy tame this wild case, or will the zoo animals be without anything...

"Join detective Judy Drewdy to create a way-official detective kit, solve six mini-mysteries, and sharpen real-and-actual sleuth skills. Chock-full of advice for the would-be sleuth and bursting with activities, here is an uber RARE diversion for fans of Judy and for anyone who loves a good mystery. "The Great Class Heist" is just one of the whodunits tackled by Judy Drewdy and agents Dills Pickle (aka Frank), Spuds Houdini (Rocky), and James Madagascar...

After fox sisters Zelda and Ivy and their best friend Eugene watch the new Secret Agent Fox movie, they are inspired to do some detective work then practice their new skills when rain threatens their campout plans.

"Eight-year-old Ada, who has a knack for science, math, and solving mysteries, teams up with her best friend, Nina, to find a missing dog."--

A pigeon private eye captures a birdnapper with help from his feathered friends.

When Michael keeps hearing an unusual sound at night, he calls his best friend Leo, and his cousin, Liv to help him figure out what's causing it. The three young neighbors, known as the Mysterious Makers of Shaker Street, build a tool to amplify the sound. They soon discover that an empty neighboring house is actually occupied! Will the Mysterious Makers put and end to the troubling noise once and for all? Ten-year-old Michael Wilson, his best friend...

Shaker Street residents are finding holes all over their yards and the Makers (Michael, his cousin Liv, and their friend Leo) set out to solve the mystery--Liv is sure it is Martians, but Michael suspects the woman with a shovel that he saw last night with his homemade telescope. Overnight mysterious holes appear in the yards of Shaker Street and the Makers (Michael, his cousin Liv, and their friend Leo) set out to solve the mystery--Liv is sure...

Detective Joe Dumpty rushes to investigate the mysterious circumstances under which his older brother, Humpty, fell from a wall on his first day as captain of the new Neighborhood Watch program.

Using bold panels of art, this book tells the story of Allan Pinkerton's Detective Agency and its pursuit of the truth.