Best Mystery Books for Kids

A remarkably sharp young detective solves neighborhood mysteries from his garage headquarters, presenting the clues to readers and inviting them to solve each case before the answer is revealed. Each short mystery is a self-contained puzzle that rewards careful reading.

This long-running classic mystery series follows an independent and resourceful teenage girl who solves crimes, uncovers conspiracies, and outsmarts criminals in her hometown and around the world — typically alongside her two best friends. Originally published from the 1930s onward, the series has been revised and relaunched multiple times and remains one of the most enduring mystery series in children's and young adult literature.

Two brothers with a passion for detective work investigate crimes and dangerous mysteries, often putting themselves directly in harm's way to crack the case. Each book delivers a fast-paced standalone adventure with action, suspense, and classic mystery structure.

A group of unusually gifted children is recruited for dangerous undercover missions by an eccentric genius who needs their unique skills to protect the world. Each book places the team inside a new high-stakes situation requiring teamwork, intelligence, and trust.

A sharp and street-smart girl living in an unconventional situation stumbles into mysteries and uses her quick thinking and stubborn determination to solve them. Each book is grounded in realistic social dynamics alongside the central mystery.

A wildly creative game designer uses a spectacular library as the setting for elaborate puzzles and challenges that reward curiosity, teamwork, and a love of books. Each book places a new group of contestants inside a fresh game-style adventure.