Philip Markoff.

Philip Haynes Markoff  was an American medical student who was charged with the armed robbery and murder of Julissa Brisman in a Boston, Massachusetts hotel on April 14, 2009, and two other armed robberies. The media have referred to the Brisman murder as a "Craigslist Killing" because the killer was alleged to have met his victims through ads they placed on Craigslist offering erotic services.Markoff was the son of Susan Haynes and Richard Markoff, a dentist in Syracuse, New York. He had an older brother, Jon Markoff.

He graduated in 2004 from Vernon-Verona-Sherill High School, where he was a member of the National Honor Society, history club and the Youth Court, as well as the school bowling and golf teams. His former English teacher and neighbor described him as "a good student and just a really nice kid. Smart, wanting to succeed, nothing strange, nothing out of the ordinary."
On August 15, 2010, one year and one day after the date his wedding was to have taken place, Markoff was found dead in his cell at Boston's Nashua Street Jail. The cause of death was later confirmed as suicide by self-inflicted wounds and suffocation. Prior to taking his life, Markoff reportedly wrote "Megan", his former fiancee's name, and "Pocket", (their pet name for each other) in blood, on the wall of his cell, and placed her photographs around his cell.