The killer was revealed to be William Lambert (whose real last name is Duchamps), a business partner of Nate Flint and a common target of suspicion (although all initial theories about him turned out to be irrelevant). He killed the people that were either related to or are the members of the O.S.L. They were Blodgett (killed by his father), DeBeck, Flint, Merchant, Rose, Thibodeaux, and the eliminated investigators, using their corpses to recreate the unfinished family dinner they had before being interrupted by the fire. Samantha "Sam" Larabee was supposed to be William's last victim (completing the set), but in the finale, Ángel, the winner, rescued her before William was able to complete his final murder. The fictional police chief, Dudley Duncan, chased him up a flight of stairs and shot him in his bedroom, sending him crashing out the window and falling two stories to the hard concrete below.