The essential facts of ten mysteries are presented, giving the reader the opportunity to solve the cases before examining the boy detective's solutions.

Willow Feathers McBeaver, aka Detective Duck, is a crime-solving duck who can crack any case--not matter how hard-boiled! Even though she's still just a little duck, there's no problem too big or too fowl for her to figure out. So when a strange object comes crashing into her pond home, she knows egg-xactly what she has to do: start sleuthing! What is this object, and how can she get it out of her pool? Armed with her ever-present satchel for collecting...

Timmy Failure, the world's greatest detective, is in Key West, Florida--but he is definitely not on vacation with his mother and Doorman Dave, who he insists never even got married. No, he is there on a job, but his business partner has abandoned him, fleeing to Cuba for political asylum--all Timmy has is an unpaid intern to help him find buried treasure.

Twelve-year-old Young Lady of Quality and Victorian amateur detective Myrtle Hardcastle returns, and now she is on the trail of a serial killer in her hometown of Swinburne.

Resolving to earn money for his mother's bills, eleven-year-old Timmy launches a detective business with a lazy polar bear, but finds their enterprise challenged by a college-bound spy and a four-foot-tall girl whom Timmy refuses to acknowledge.

Teenage detective Nancy Drew uses her courage and powers of deduction to solve the mysterious happenings in an old stone mansion.