A body washes up on the banks of the Maribyrnong River in flood. Caught in the act of taking his own life, and surrounded by the bloodstained clothes of his wife, Oleg Kransky is a shoe-in for number one suspect. But he's not talking. To anyone. Oleg's former psychologist, Decca Brand, tells the police that even when Oleg was talking he wasn't telling the truth - about himself or about his wife. It's a complicated tale with more twists and turns than a box full of pretzels. How much water will it take to flush out a murderer?