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

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