
ExclusiveMark of a Killer Bonus: Was Roger Kibbe Cutting His Victims' Hair to Keep as Trophies? (Season 1, Episode 4)
Authorities originally thought that Roger Kibbe was cutting the hair of his victims to keep as trophies, but then realized that he was doing so to remove evidence.
Season 1 Episode 4 - Videos

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Mark of a Killer: A Body is Discovered in a Ditch in Sacramento in 1986 (Season 1, Episode 4)

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Mark of a Killer: Charmaine Sabrah Goes Missing (Season 1, Episode 4)

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Mark of a Killer: Sacramento Area Victims Are All Found with Their Clothing Cut (Season 1, Episode 4)

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Mark Of A Killer Bonus: Survivor, Debra Guffie Leads To The Downfall of Roger Kibbe (Season 1, Episode 4)

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Mark Of A Killer Bonus: FBI Profiler Explains Serial Killer Behavior With Victim Stephanie Brown (Season 1, Episode 4)

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Mark Of A Killer Bonus: The Source Of Roger Kibbe’s Irregular Clothing Cutting (Season 1, Episode 4)