24 year old Boston University School of Medicine student Philip Markoff used Craigslist advertisements to deceive women engaged in prostitution and then robbed them in hotels, even brutally murdering them. The media called him the Craigslist website killer, and a series of cases have deeply troubled the police and society... "Craigslist Killer" tells the story of Philip Markoff (played by Jack McDorman)'s dark and mysterious life spent online, preparing to become a hopeful doctor and live a happy life with his fianc é e Megan McAllister (played by Agnes Bruckner). As one of the smartest medical students at Boston University, Markoff seemed destined to become a great man, and in the eyes of Megan, his friends, classmates, and professors, he would not do anything wrong. But for those around him, there is hidden violent anger that only he and the victims know - starting from April 14, 2009, when he was suspected of first-degree murder of a masseuse who advertised her services on Craigslist. When the police discovered that the brutal killing and other attacks against women were related to advertisements on Craigslist, their investigation ultimately led them to Markoff. William Baldwin plays the chief detective investigating this case. Philip Markoff (played by Jack McDorman) has everything. A medical student with a beautiful fianc é (Brookner), Philip has a future that others can only envy. However, when a masseur was murdered by a man she encountered in an advertisement on Craigslist, the lead directly pointed to Philip, who was accused by the police of leading a secret life of plundering young women. William Baldwin starred in this shocking story about deception and lies, based on a true story that shocked the whole country.