Series 2, Episode 1

S2 E1: Detectives Cassie and Sunny find themselves thrown into another historic murder case with the discovery of a body. This time it's the perfectly preserved remains of a middle-aged man found in a suitcase in the silt of a London river. As the detectives begin the complicated task of trying to identify the victim, four unconnected people go about their business - Brighton-based lawyer Colin Osborne, pediatric nurse Marion Kelsey, teacher Sara Mahmoud and respected police officer Tessa Nixon – are unaware they are about to be dragged into the investigation.