Name	Known for
Michelle Lukowski Self - Justin's Co-Worker Self - Justin's Co-Worker See fewer	Six Degrees of Murder (2016)
Lisa Black Self - Former Journalist, The Chicago Tribune Self - Former Journalist, The Chicago Tribune See fewer	Six Degrees of Murder (2016)
Heather Mufale Self - Justin's Friend Self - Justin's Friend See fewer	Six Degrees of Murder (2016)
Gianni Giamberduca Self - Sergeant, Lake County Sheriff's Office Self - Sergeant, Lake County Sheriff's Office See fewer	Six Degrees of Murder (2016)
David Godlewski Self - Chief of Police, Lakemoor P.D. Self - Chief of Police, Lakemoor P.D. See fewer	Six Degrees of Murder (2016)
Richard Keller Self - Former Lake County Coroner (as Dr. Richard Keller) Self - Former Lake County Coroner (as Dr. Richard Keller) See fewer	Forensic Files (1996)
Robert Watson Self - Patrolman, Eureka, Missouri P.D. Self - Patrolman, Eureka, Missouri P.D. See fewer	Six Degrees of Murder (2016)
Harry Prichett Narrator (voice) Narrator (voice) See fewer	The Interpreter (2005)
Steve Boghossian Jim Kelly Jim Kelly See fewer	FBI (2018)
Morgan Beatty Ari's First Victim (uncredited) Ari's First Victim (uncredited) See fewer	History Detectives (2003)
C. Hope Belmont Donna FioRito (uncredited) Donna FioRito (uncredited) See fewer	Vigilantes (2016)
Orease Bowers Detective (uncredited) Detective (uncredited) See fewer	FBI (2018)
Ben Gougeon Ari Squire (uncredited) Ari Squire (uncredited) See fewer	The Marvelous Mrs. Maisel (2017)
Shea Madison Heather Mufale (uncredited) Heather Mufale (uncredited) See fewer	Zero Absolution (2018)
Larry Mihlon Lt. Dave Godlewski (uncredited) Lt. Dave Godlewski (uncredited) See fewer	A Crime to Remember (2013)
Justin Newman Self - Victim (archive footage) (uncredited) Self - Victim (archive footage) (uncredited) See fewer
Tess Quadro Michelle Lukowski (uncredited) Michelle Lukowski (uncredited) See fewer	By Any Means (2017)
Peter Sansbury Justin Newman (uncredited) Justin Newman (uncredited) See fewer	Trip to the Moon
Claudia Sersanti Denise Squire (uncredited) Denise Squire (uncredited) See fewer	Keep the Change (I) (2017)
Ari Squire Self - Suspect (archive footage) (uncredited) Self - Suspect (archive footage) (uncredited) See fewer