When a serial killer commits four brutal murders in 24 hours, Detectives Benson, Munch and Fin canvass the streets searching for signs of a madman who exclaims paranoid and twisted religious rhetoric while committing his crimes. Once suspect Daniel Varney is in custody, Benson wades through his "religious" justifications with the help of his distraught wife, who provides key information with profound implications for A.D.A. Cabot's case. Meanwhile, Stabler's efforts to coordinate the case, and Benson's deft questioning of Varney, do not go unnoticed by Captain Cragen.