Gene Joe Stringer, a vicious sociopath, raped and brutally murdered an eleven-year-old little girl. Shortly afterwards, he was arrested, tried, convicted, and sentenced to death. Sam Mitchell, as a forensic psychiatrist, testified in the trial, refuting the defense attorney's claim that the man was insane at the time of the murders. Stringer was ultimately executed by lethal injection. Within a week of his execution, key players in Stringer's trial begin to meet violent deaths. Intrigued by this bizarre turn of events, Sam works in conjunction with state and local law enforcement officials who desperately try to track down the unknown killer, who appears to be seeking revenge for the execution. The story takes a strange twist, when it appears the murderous rampage is the work of someone who is the exact double of the recently executed inmate. As Sam and his colleagues draw nearer to the killer, Sam finds himself a target of the mysterious murderer.