The Mark of a Killer The I 40 Killer (Season 3, Episode 1)
TV Episode | Documentary, Crime

The Mark of a Killer

The I 40 Killer (Season 3, Episode 1)

TV Episode | Documentary, Crime

A killer is murdering and mutilating young women along the Route 40 corridor in Delaware. But when investigators set up an undercover operation, the hunter soon becomes the hunted.

Directors

Chad Cunningham | Wendy Greene

Writer

Wendy Greene

Cinematographer

Chris Trainor

Editors

Kieran Healy | Bobby Zeleny

See all filmmakers & crew (11)

Edit Released

Updated Apr 12, 2021

Release date

Apr 12, 2021 (United States)

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Cast	+ Add Cast
19 cast members

Name	Known for
Joseph Swiski Self - Delaware State Police (as Detective Joseph A. Swiski) Self - Delaware State Police (as Detective Joseph A. Swiski) See fewer	Arrest & Trial (2000)
Kathleen Jennings Self - Delaware Attorney General's Office (as Kathy Jennings) Self - Delaware Attorney General's Office (as Kathy Jennings) See fewer	Grave Secrets (2016)
Nancy Miller Self - Shirley Ellis' Mother Self - Shirley Ellis' Mother See fewer	The Mark of a Killer (2019)
Nancy Reneé Seward Self - Shirley Ellis' Sister Self - Shirley Ellis' Sister See fewer	The Mark of a Killer (2019)
Jeff Mordock Self - Journalist Self - Journalist See fewer	The Mark of a Killer (2019)
James Hedrick Self - New Castle County Police Department (as Detective Jim Hedrick) Self - New Castle County Police Department (as Detective Jim Hedrick) See fewer	Arrest & Trial (2000)
Joni E. Johnston Self - Forensic Psychologist Self - Forensic Psychologist See fewer	Crime Redefined Podcast (2018)
Renee Taschner Self - New Castle County Police Department (as Officer Reneé Taschner) Self - New Castle County Police Department (as Officer Reneé Taschner) See fewer	Grave Secrets (2016)
Robert Gordon Self - Michelle Gordon's Brother Self - Michelle Gordon's Brother See fewer	The Mark of a Killer (2019)
Catherine DiMauro Self - Victim (archive footage) Self - Victim (archive footage) See fewer
Shirley Ellis Self - Victim (archive footage) Self - Victim (archive footage) See fewer
Margaret Finner Self - Victim (archive footage) (as Margaret Lynn Finner) Self - Victim (archive footage) (as Margaret Lynn Finner) See fewer
Michelle Gordon Self - Victim (archive footage) Self - Victim (archive footage) See fewer
Kathleen Meyer Self - Victim (archive footage) Self - Victim (archive footage) See fewer
Steven Brian Pennell Self - Serial Killer (archive footage) (as Steven Pennell) Self - Serial Killer (archive footage) (as Steven Pennell) See fewer
Addison Freeman Teen Girl (uncredited) Teen Girl (uncredited) See fewer	Snapped: Killer Couples (2013)
Jill Holder Pennell's Mom (uncredited) Pennell's Mom (uncredited) See fewer	Consider the Lilies (2023)
William J. Mode FBI Profiler (uncredited) FBI Profiler (uncredited) See fewer	The Work and the Glory (2004)
TonyLewis Detective #3 (uncredited) Detective #3 (uncredited) See fewer	Super Heists (2021)