Forensic FactorSeason 52008 · 13 episodesEpisodes1The Colchester RapistA serial rapist stalks and preys on elderly women in a reign of terror that spans nearly two decades.2Atomic DogA sniper who targets abortion doctors turns murderous, throwing a city into panic.3The Eclectic MurdersA sniper who targets abortion doctors turns murderous, throwing a city into panic.4Smiley Face KillerInvestigators probe the murders of prostitutes in Spokane, where the killer has left the victims with smiling mementos.5ForsakenA jogger discovers the partially mummified remains of a human body.6The Fifth CommandmentA double homicide in Hudson, Wisconsin leaves a small town reeling and two young detectives with little to go on.7Knock, Knock, You're DeadIn 2001, the Louisiana State University area of Baton Rouge was held hostage by a serial killer.8PyromaniacProfiling arsonist John Leonard Orr.9Leaving Las VegasLas Vegas shows its darker side when the burnt body of a prominent business man is uncovered.10Greetings from YahwehA phantom sect of white supremacists claims responsibility for a series of bombings and bank robberies in Spokane.11Picture PerfectFour people are found slaughtered in a factory in Bartow, Florida but the prime suspect has a perfect alibi.12Bike Path RapistA 22-year-old college student is found raped and strangled with a garrotte on a Buffalo bike path.13To Catch a Serial KillerThe world's top criminal investigators, forensic scientists and behavioural analysts investigate three cases of serial killers.Season 1Season 2Season 3Season 4Season 6