The adventure zone. 3, Petals to the metal
(Young Adult Book)

"Our boys have gone full-time at the Bureau of Balance, and their next assignment is a real thorny one: apprehending The Raven, a master thief who's tapped into the power of a Grand Relic to ransack the city of Goldcliff. Local life-saver Lieutenant Hurley pulls them out of the woods, only to throw them headlong into the world of battle wagon racing, Goldcliff's favorite high-stakes low-legality sport and The Raven's chosen battlefield. Will the boys and Hurley be able to reclaim the Relic and pull The Raven back from the brink, or will they get lost in the weeds?"--Page [2] of cover.