mystery fiction

Four private eyes--Wizard, Tubby, Skinny, and Snitch--investigate a puzzling case.

When he finds a clue to a mystery in his tree house, Todd enlists the help of his third-grade classmates to identify the trespasser who had left it there.

Cam uses her photographic memory and her brain to solve two mysteries at the beach, involving a missing mother and a missing set of papers.

As more and more of his flowers display the bite marks of a wandering tortoise, Nate sets out to uncover the mystery of the reptile's origins.

Cam uses her photographic memory to find a shopping list that her dad lost at the library.

Despite attempts against their lives, Frank and Joe accept a case involving the most powerful man in a small town in Georgia and an allegation of piracy and smuggling.

As Nate the Great sets to work on his first international case, he searches for a lost "something" and saves the King of Sweden from a troublesome traveler.

Jeff, already worried about losing his place on the hockey team because of low grades, suddenly finds himself the victim of sabotage in the form of forged papers.

Encyclopedia Brown, boy detective, solves ten more mysteries. The solutions are given at the end of the book.

Idaville's ten-year-old "Sherlock Holmes" solves ten mystery cases.