Sexaddict53885 aka The Craigslist Killer

Some people appear passive and low key to friends and co-workers and even to family. Yet, they can be aggressive and changed by drugs and alcohol. They sometimes even end up a serial killer.

On the last day of May 2007, one young man began to pursue this alternative lifestyle -- in secret. Once granted access on the Alt website (www.alt.com), he created his online persona, calling himself --SEXADDICT53885--and posting a photo of his naked torso and, as isde rigueur on the site, his erect penis. Then he typed in his basic stats.

Birthday: February 12, 1986

Hair color: Blond

Hair length: Short

Eyes: Blue

Height: 6 feet, 4 inches, 193-195 cm

Race: Caucasian

Lives in: Boston, Massachusetts

I think about ALT lifestyle: All the time

Role: Submissive

Level of Experience: I am new at this

He listed some of the sexual activities he enjoyed, including anal sex, wearing a collar and leash, and cross-dressing. Then, he wrote up his profile:

Profile: I am currently a graduate student looking to experiment with the BDSM

lifestyle…I am very interested in being dominated, and made to do different things...

This man who wanted an alternate lifestyle became the Craigslist Killer, Philip Markoff in April, 2009.

After being arrested on April 20, 2009 and placed in jail to await trial, by August 15, 2010 Markoff committed suicide through extraordinary means. "Using a primitive scapel fashioned from a pen and a piece of metal he cut himself in various areas of his body including his carotid artery and stuffed toilet paper down his throat to stop any intubation efforts and then, he covered himself with plastic and after wrapping himself with the plastic wrap he covered himself in a blanket. Sometime during his suicide, he managed to control the bleeding long enough to scribe two words in blood over the door to his cell and it said, "Megan -- Pocket."

Information televised on 48 hours/Mystery - August 20, 2010.