A gay father is found beaten to death and his adopted son is missing. DS Brooks and DS Casey track down the baby’s biological parents, Ruth Pendle, a recovering drug addict, and Neil her former boyfriend, who are taken into custody. But their stories... (more) don’t match up so who is guilty of murder and why? And there is tension in the CPS offices when Kate Barker struggles to view the case objectively and puts the outcome in jeopardy.