Hardy Boys Clue Book

Join detective brothers Frank and Joe Hardy as they solve mysteries around Bayport! Readers can help solve each case as well with an interactive, reproducible page in each book.

Latest book from Hardy Boys Clue Book

Who Let the Frogs Out?

Book #9

Detective brothers Frank and Joe must solve a muddy mystery in the ninth book in the interactive Hardy Boys Clue Book series.

Bayport Elementary is hosting a Mud Run to celebrate spring! A particularly muddy part of the town’s park will be set aside for the race and Coach Lambert has even managed to make more mud by using the park’s hoses and shovels. Frank and Joe can’t wait to splash through the muck.

But on the day of the race, the runners are stopped in their tracks by croaking, blurping bullfrogs! Lots of people in the town had been annoyed that the park was being taken over by a bunch of muddy kids. Could someone have sabotaged the race with buckets of frogs?
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Don't Miss These Previous Books in the Series!

Coming Soon from Hardy Boys Clue Book

The Time Warp Wonder ON SALE11/13/2018
Who Let the Frogs Out? ON SALE4/16/2019

About the Authors

Franklin W. Dixon

Franklin W. Dixon is the author of the ever-popular Hardy Boys books.

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Franklin W. Dixon

Franklin W. Dixon is the author of the ever-popular Hardy Boys books.

BECOME A FAN

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