Hardy Boys Clue Book 09 – Who Let the Frogs Out

Bayport Elementary is hosting a Mud Run to celebrate spring! A particularly muddy part of the towns park will be set aside for the race and Coach Lambert has even managed to make more mud by using the parks hoses and shovels. Frank and Joe cant 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?