Over The Edge. Justin Macdonald Teen Agent, #3

Justin Macdonald balances homework, friendships, and a massive secret: he's an undercover operative for Tenacity, an elite teen crime-fighting network. When a moody new student falls from a three-story roof in broad daylight, the town assumes it's a tragic suicide attempt. But Justin knows what he saw: a shadowy figure retreating from the ledge. Partnering with his closest allies, Justin dives headfirst into a dangerous conspiracy of corporate cover-ups, kidnapping, and betrayal. To solve the case, he must stay one step ahead of a ruthless ring of criminals who will stop at nothing to bury the truth-and anyone who uncovers it.