24歲的波士頓大學醫學院學生馬可夫（Philip Markoff）利用Craigslist廣告, 欺騙從事**交易的女子上勾，然后在旅館中搶劫她們, 甚至殘忍的謀殺她們。媒體叫他Craigslist網站殺手, 一連串的案件令警方及社會陷入深深的不安…
　　“The Craigslist Killer” follows the dark, mysterious life Philip Markoff (Jake McDorman) conducted online while preparing for a promising future as a doctor and a life of happiness with his fiancée, Megan McAllister (Agnes Bruckner). Seemingly destined for greatness as one of Boston University’s brightest med students, Markoff could do no wrong in the eyes of Megan, his friends, fellow students and professors. But hidden from those close to him was the violent wrath only he and his victims knew — beginning with his alleged April 14, 2009, first-degree murder of a masseuse who advertised her services on Craigslist. When police discover that the brutal killing and a number of other attacks on women were all connected to advertisements placed on Craigslist, their investigation ultimately leads them to Markoff. William Baldwin portrays the lead detective investigating the case.
　　Philip Markoff (Jake McDorman) had it all. A straight-A medical student with a beautiful fianc閑 (Agnes Bruckner), Philip had a future others could only envy. But when a masseuse is murdered by a man she meets through an ad she placed on Craigslist, the clues point directly toward Philip, whom the police accuse of leading a secret life where he preys upon young women. William Baldwin costars in this shocking tale of deception and lies, based on the true story that stunned a nation.