MURDERER Mark Twitchell became obsessed with the TV show Dexter about an avenging serial killer, even going so far as to have a “killing room” where he dismembered the bodies of his victims – just like the fictional character.
When police investigated Twitchell’s death room after his arrest, they found a document the filmmaker claimed was a screenplay detailing his crimes, including the murder of Johnny Altinger.
Investigative journalist Steve Lillebuen and retired FBI profiler Julia Cowley delve into the mystery of the Dexter Killer in a new CBS 48-hour special, detailing the disturbing case and Twitchell’s possible motivations.
Lillebeun and police say Twitchell’s fascination with the TV killer carried over to his real-life crimes, in which he lured two different men into his home via the dating app Plenty of Fish to attempt to kill and dismember their bodies.
In October 2008, Twitchell posed as a woman online to lure an unsuspecting 38-year-old man named Johnny Altinger to his death.
In his prepared killing room, 29-year-old Twitchell brutally punched and stabbed Altinger before methodically dismembering him on a table in the garage.
Although his trial of Altinger’s murder was somewhat eerily similar to what Dexter may have done, the Canadian killer has “completely denied” the connection.
“As you know, Dexter has ‘almost nothing’ to do with my case,” Twitchell wrote in a letter to Lillebuen.
“It has no bearing on what actually happened.”
However, according to Lillebuen, the case’s evidence shows “significant connections” to Dexter.
“He had a killing room set up with plastic sheeting. He had a table set up for his victims.
“He had this type of processing kit that was very similar to what Dexter uses.”
The day after Twitchell was arrested in connection with Altinger’s death, police found the suspiciously deleted file on Twitchell’s computer labeled “SK Confessions”.
In the document, the killer wrote about his killing room, stating that it contained “several rolls of painter’s plastic wrap” and a 45-gallon steel drum “for the body parts,” as well as a “game processing kit” with several different knives and a serrated saw “for the bones.” .
Twitchell had attempted to lure another victim into his killing room alongside Altinger earlier this month.
When Gilles Tetreault was about to meet his online date named “Sheena” at the set location of Twitchell’s garage, he was attacked by Twitchell wearing a hockey mask.
Tetreault fought back in a fierce struggle and escaped the horrific scene, but did not report the attack until he saw the hockey mask at a police press conference following Altinger’s death.
Twitchell’s confessions had mentioned a victim who escaped, and police used Tetreault’s account of the escape to link Twitchell to the crimes.
Police linked the details in the SK confessions to evidence they found in the garage filmmaker Twitchell allegedly rented to work on his short film.
For example, in the garage, investigators found a barrel with burn marks, pointing to a passage in the confessions where the killer spoke of trying to burn human remains in a barrel.
When Twitchell told police the blood spatter found was from gruesome scenes in his short films, investigators asked an actor from the film how many fake blood spatters there were actually during filming.
“None,” the actor replied, prompting the ordering of luminol tests.
The tests revealed that there was an excessive pool of human blood in the garage — something that would not have been visible to the naked eye.
The 48-hour episode aims to unveil more details about Twitchell’s disturbing ghost by analyzing the crime scenes and his lyrics.
“The Dexter Killer” will air Saturday at 10 p.m. local time on CBS and stream on Paramount+.
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https://www.thesun.co.uk/news/18348437/dexter-killer-mark-twitchell-kill-room-confessions-cbs/ Mystery of ‘Dexter Killer’ Mark Twitchell solved by terrifying script found in KILL ROOM primed to dismember bodies