High Flyer With a Flat Tire Author:Paul McCusker Mark Prescott is in trouble. Not only did he fight with Joe Devlin, but Joe accuses Mark of slashing the tire on his new bike. He didn't do it, but how can he prove his innocence? By finding the real culprit! With the help of his wise friend Whit, the eccentric inventor, Mark untangles the mystery and learns new lessons about friendship and fam... more »ily ties.« less