If the living told the truth, forensic pathologist Dr. Samantha Ryan wouldn’t have to spend so much time examining the dead. The living want us to believe that an Asian boxer died of a fatal blow in an exhibition fight, an AIDS sufferer died of AIDS, a young woman was stabbed by her jealous husband, and an old woman was beaten to death by a violent alcoholic. But the dead tell different stories with their grim clues. Welcome back to the Cambridge Police Department, where a former lover distracts Sam from her already full agenda.