In Northern New South Wales, heavily pregnant and a week away from maternity leave, Detective Sergeant Kate Miles is exhausted and counting down the days. But a violent hold-up at a local fast-food restaurant with unsettling connections to her own past means that her final days will be anything but straightforward. When a second case is dumped on her lap, the closed case of a man drowned in recent summer floods, what begins as a simple informal review quickly grows into something more complicated. Kate can either write the report that's expected of her or investigate the case the way she wants to. As secrets and betrayals pile up, and the needs of her own family intervene, how far is Kate prepared to push to discover the truth?