24岁的波士顿大学医学院学生马可夫（PhilipMarkoff）利用Craigslist广告,欺骗从事**交易的女子上勾，然后在旅馆中抢劫她们,甚至残忍的谋杀她们。媒体叫他Craigslist网站杀手,一连串的案件令警方及社会陷入深深的不安…
　　“TheCraigslistKiller”followsthedark,mysteriouslifePhilipMarkoff(JakeMcDorman)conductedonlinewhilepreparingforapromisingfutureasadoctorandalifeofhappinesswithhisfiancée,MeganMcAllister(AgnesBruckner).SeeminglydestinedforgreatnessasoneofBostonUniversity’sbrightestmedstudents,MarkoffcoulddonowrongintheeyesofMegan,hisfriends,fellowstudentsandprofessors.Buthiddenfromthoseclosetohimwastheviolentwrathonlyheandhisvictimsknew—beginningwithhisallegedApril14,2009,first-degreemurderofamasseusewhoadvertisedherservicesonCraigslist.WhenpolicediscoverthatthebrutalkillingandanumberofotherattacksonwomenwereallconnectedtoadvertisementsplacedonCraigslist,theirinvestigationultimatelyleadsthemtoMarkoff.WilliamBaldwinportraystheleaddetectiveinvestigatingthecase.
　　PhilipMarkoff(JakeMcDorman)haditall.Astraight-Amedicalstudentwithabeautifulfianc閑(AgnesBruckner),Philiphadafutureotherscouldonlyenvy.ButwhenamasseuseismurderedbyamanshemeetsthroughanadsheplacedonCraigslist,thecluespointdirectlytowardPhilip,whomthepoliceaccuseofleadingasecretlifewherehepreysuponyoungwomen.WilliamBaldwincostarsinthisshockingtaleofdeceptionandlies,basedonthetruestorythatstunnedanation.