Searching for the truth but never compromising, forensic pathologist Professor Sam Ryan is prepared to investigate crimes and interview witnesses herself if she is unhappy with the conclusions reached by the police. Aided by her dynamic colleagues, Dr Leo Dalton and junior pathologist Harry Cunningham, she and her team are presented with four more tragic mysteries to solve. Cases include a black athlete and his agent found dead and a serial killer newly released from prison and out for revenge on those who convicted him - one of his targets is Sam.