Sam comes under intense scrutiny during an official inquiry into the deaths of two brothers while they were in prison. Her findings are soon challenged by her colleague, Leo Dalton, who is brought in to perform a second autopsy. Meanwhile, a series of murders that are taking place cast suspicion on a recently released ex-convict. He served years in prison after being convicted of killing his wife; the evidence against him was given by Sam during one of her very first cases. During his time in prison, however, he continued to deny his guilt. Sam begins to believe that someone is stalking her, while the police have trouble locating the ex-convict.

A John Doe is found months after his death; an attractive female agent for a championship athlete is believed to have jumped to her death from a rooftop. Forensic pathologists must sort out time and methods of death.