随着一系列残忍的谋杀案席卷全城，两名便衣侦探（布伦特·哈维和米娅·李）竞相解开谜团，揭开凶手的面纱。他们唯一的线索是：每个受害者都是前警察，身上都画着一个血红色的字母。在凶手用鲜血说出他们的信息之前，有多少人会死去？As a string of brutal murders plague the city, two undercover detectives race to solve the mystery and unmask the killer. Their only clues: each victim is a former cop and each has a blood-red letter painted on their body. How many will have to die before the killer spells out their message in blood?