Further tales from the morgue, as Professor Leo Dalton, Dr Harry Cunnigham and Nikki Alexander uncover more grizzly misdemeanours. In this series, when four bodies are found in the river Thames, the team soon realises that they are dealing with a people-trafficking operation gone wrong; Leo and arch-cynic DI De Rohan are drawn into the case of a woman killed in a terrible fire; and Harry's ex-girlfriend, Penny Harris, is found dead after an unusual car accident. Meanwhile, Nikki investigates the death of elderly woman, who appears to have been assaulted by an intruder. Crime drama starring Emilia Fox, William Gaminara and Tom Ward.