Mystery Books

Products and articles tagged with "Mystery Books"

Products

Harriet the Spy, Double Agent

$1.87

Harriet the Spy, Double Agent continues the beloved series! Join Harriet M. Welsch on her latest mystery adventure. Perfect for young readers ages 8-12. Discover why it's a bestselling favorite. Get your copy today!

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Blog Posts

January 25, 2026

Harriet The Spy, Double Agent: A Modern Mystery for Young Readers

Explore the thrilling world of Harriet the Spy, Double Agent. Discover why this modern mystery continues the legacy of Louise Fitzhugh's classic series, perfect for fans of spy kids and middle-grade fiction.

Harriet The Spy Children's Books Mystery Books Middle Grade Fiction Book Review