Charlotte Gleeson's life is nothing like she imagined. Her daughter hates her, her husband is having an affair, her drinking is out of control. And now she's the prime suspect in a murder investigation. For DI Ellen Kelly, it's her first big investigation in eight months, since she let a serial killer get away. There's a lot riding on a good result, which means keeping up the pressure on Charlotte and her family. As Ellen investigates, it becomes clear the Gleesons are harbouring some dangerous secrets. The more she digs, the nearer she is to a deady confrontation.