Book 3 in the Marty Frye young chapter book mystery series by bestselling author-illustrator team Janet Tashjian and Laurie Keller In this new collection of mysteries, everyone's favorite poet detective is back in action. When a prankster tangles all the school jump ropes into knots and gym is canceled, Marty pins down the culprit. When five machines are mysteriously found broken at the arcade, Marty jumps on the case. And when Mom's...