The masked man took out a gun and ordered Gilles to the ground and placed duct tape on his eyes. While Gilles was on the ground he decided "if I'm going to die, I'd rather go my way than his way." He got up, ripped the tape from his eyes and grabbed the attacker's gun. That's when he discovered it was made of plastic.
After a violent struggle, Gilles ran into the alley behind the garage and collapsed at this intersection in front of a couple out for a walk. Gilles asked them for help, but the couple feared he was part of a mugging scheme and walked away.
Gilles managed to escape but didn't report the incident to police. He felt embarrassed that he was duped and convinced himself that it was not as serious as he first thought. One week later, this man, Johnny Altinger, would not escape.
On Oct. 10, 2008, Johnny Altinger vanished after answering a similar dating ad on the plentyoffish.com website. Friends and family grew gravely concerned after receiving this email from Johnny's account on Oct. 13. Everyone felt it was very out of character.
Before he disappeared, Johnny had forwarded the directions of where he was going via text message to two friends. Following the directions, police were led to the film set garage of aspiring film maker Mark Twitchell.
Police are not suspicious of Twitchell until he tells them that he had bought a red Mazda off a stranger for $40 and that it was parked at a friend's house. It just so happened that the police were looking for Johnny Altinger's red Mazda.
Police find this laptop in Twitchell's trunk and in the deleted files, a document titled "SK Confessions". The first lines read "This story is based on true events. The names and events were altered slightly to protect the guilty. This is the story of my progression into becoming a serial killer."
Police place Twitchell under 24-hour surveillance. During their investigation they learn that he is a devoted fan of the Showtime series "Dexter" about an avenging serial killer. Twitchell even posed as Dexter Morgan on "Facebook."
Police are now convinced that the document found in Mark Twitchell's laptop titled "SK Confessions" is a true account of Altinger's murder and the attack on Tetreault. They decide to go to the media with a picture of the mask hoping the first victim (Tetreault) will come forward.
The evidence found by police matched the descriptions in "SK Confessions". One passage spoke of the killer trying to burn Altinger's remains in a barrel; police found a burned barrel inside Twitchell's garage.
Police searched for Johnny Altinger's remains for nearly two years before being led to this sewer by a Google map given to them by Mark Twitchell. Altinger's remains were a half block from where police had stopped their search.
Investigators believe that Mark Twitchell's motive was for purely for the experience of killing another person to make a more authentic serial killer movie. Twitchell was found guilty of first-degree murder and sentenced to 25 years to life.