bicycle theft

"Summer is here, school is out and there's...nothing to do?! Since grown-ups invaded the skating rink, there's nowhere for Mina's friends to hang out. Luckily, a high-stakes competition is about to mark the opening of a new skate park. As everyone gets weirdly intense about it, Mina faces a string of mysteries. Who stole her cousins' new bikes? What does Gareth Trumpshaw want? And who keeps levitating past her window?"--Provided by publisher.

Frank and Joe are the most promising contestants in the annual Junior Bike Race in Bayport, but when Frank accidentally runs over a nail a blows a tire, his bike disappears and everyone becomes a suspect.