Meet Garvie Smith. Highest IQ ever recorded at Marsh Academy. Lowest ever grades. What's the point? Life sucks. Nothing surprising ever happens. Until Chloe Dow's body is pulled from a pond. His ex-girlfriend. DI Singh is already on the case. Ambitious, uptight, methodical - he's determined to solve the mystery - and get promoted. He doesn't need any 'assistance' from notorious slacker, Smith. Or does he?