Simple Machines

"Living in an apartment above the bike shop owned by his embittered father, Tomas Zimmermann keeps company with Grey and Callie, his best friends since childhood. At summer's end, Tom leaves for Madison where he falls in with an unusual and ultimately destructive crowd. As the book approaches a climax, Grey and Callie reappear with trouble of their own, and Tom is forc choose between old loyalties and a new sense of belonging"--From publisher website.