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"48 Hours" sits down with a Canadian man who escaped "The Dexter Killer"

April 27, 2022 / 01:53

This episode of 48 Hours covers the story of Mark Twitchell, known as the Dexter Killer, who was convicted of first-degree murder in 2011. The episode features an interview with Geo Tetra, one of Twitchell's intended victims, who recounts his harrowing experience.

Geo Tetra shares details about a date he arranged with a woman named Sheena, which led him to a garage where he was attacked by Twitchell, who wore a black and gold hockey mask. Tetra describes the fear he felt as he was ordered to the ground at gunpoint and how he fought back to escape.

After the attack, Tetra did not report the incident, believing it to be a botched robbery. However, a week later, another man, Johnny Altinger, was lured to the same garage and was killed by Twitchell.

The episode also discusses Twitchell's fascination with the TV series Dexter and his upcoming eligibility for early parole.

TLDR

Geo Tetra recounts his escape from Mark Twitchell, the Dexter Killer, who murdered another man shortly after Tetra's attack.

Episode

1:53
00:00:00
48 hours is sharing the story of a man who barely escaped the criminal known as the dexter killer
00:00:06
a killer's name is mark twitchell and he was convicted of first-degree murder back in 2011. he was reportedly
00:00:11
fascinated with the tv series dexter and aspired to be a serial killer himself now the man who was apparently one of
00:00:18
twitchell's intended victims is telling his harrowing survival story to 48 hours
00:00:22
contributor troy roberts geo tetra was excited for a date with a woman he met online she was very
00:00:31
attractive looking and what was her name her name was sheena she sent directions that took him
00:00:37
to this garage but as soon as jill walked in he was attacked by a man he's about like six foot and and has
00:00:45
this black and gold hockey mask all painted up on his face i just chill down my back wow this is no date
00:00:54
the masked man ordered him to the ground at gunpoint and he tore a piece of tape
00:00:59
and he covered my eyes with it i start hearing different things in my head is just racing like it's like thinking
00:01:08
what's going on what's he gonna do is he taking another weapon out jill decided he wasn't waiting to find out i can't do
00:01:14
this i gotta fight back so i got up and uh ripped the tape off my eyes after a violent struggle jill broke free
00:01:23
and escaped embarrassed and believing he had been a victim of a botched robbery he didn't call police
00:01:30
little did jill know that a week later another man johnny altinger would be lured to that same garage and lose his
00:01:38
life so wow mark twitchell will be up for early parole next year you can see troy
00:01:46
roberts report the dexter killer tonight on 48 hours at 8 eastern 7 central on cbs news streaming network

Badges

This episode stands out for the following:

  • 85
    Most intense
  • 80
    Most shocking
  • 80
    Biggest twist
  • 75
    Most heartbreaking

Episode Highlights

  • The Dexter Killer
    Mark Twitchell, inspired by the TV series Dexter, was convicted of murder in 2011.
    “A killer's name is Mark Twitchell.”
    @ 00m 06s
    April 27, 2022
  • A Harrowing Survival Story
    Jill's escape from an attack in a garage reveals the chilling reality of Twitchell's crimes.
    “I just chill down my back.”
    @ 00m 51s
    April 27, 2022
  • The Tragic Fate of Johnny Altinger
    A week after Jill's escape, another man was lured to the same garage and killed.
    “Little did Jill know that a week later...”
    @ 01m 28s
    April 27, 2022

Episode Quotes

  • Wow, this is no date!
    "48 Hours" sits down with a Canadian man who escaped "The Dexter Killer"
  • I can't do this, I gotta fight back!
    "48 Hours" sits down with a Canadian man who escaped "The Dexter Killer"
  • Little did Jill know...
    "48 Hours" sits down with a Canadian man who escaped "The Dexter Killer"

Key Moments

  • Survival Story00:18
  • Masked Attack00:42
  • Escape and Regret01:23
  • Upcoming Parole01:41