In the spring of 2009, a short-lived spree of attacks against women in Boston and Rhode Island had the Eastern Seaboard on edge. But when a suspect was finally identified, the revelation was almost too bizarre to believe: a clean-cut, promising medical student with a seemingly perfect home life. As investigators dug deeper, they uncovered a dual existence darker and more calculated than anyone who knew him could have possibly imagined. These are the crimes of the Craigslist Killer, otherwise known as Philip Markoff.

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