Joel Rifkin (Self - Serial Killer), Julian Attaway (Self - Catherine Williams' Husband), Robert Mladinich (Self - Rifkin Biographer, Detective, NYPD), Sean Ruane (Self - Detective, NYS Police), Eugene Corcoran (Self - Lieutenant, NYS Police), Freddie Reiter (Self - Former Rifkin Neighbor & Classmate), Sasha Rose (Self - Rifkin's Classmate), N.G. Berrill (Self - Forensic Psychologist), Joan Swirsky (Self - Rifkin Biographer, Psychotherapist), Bill Springer (Self - Acting Police Chief, Hopewell Township, NJ)