Natalie Black, the U.S. ambassador to the United Kingdom, has returned to Washington with her job — and her life — in jeopardy. Everyone chalks up Black’s claims of attempts on her life as a ploy for sympathy after the death of her fiance …. everyone but FBI Special Agent Davis Sullivan. Meanwhile, a cunning psychopath has escaped an Atlanta mental hospital and is out for revenge against the FBI, primarily Lacey Sherlock, whom his dying mother begged him to kill after Sherlock and Dillon Savich brought down her cult. The clock is ticking as the danger intensifies for both Black and Sherlock ….


美國駐英大使娜塔莉‧布萊克回到了華盛頓，但她的工作與生活卻岌岌可危。在布萊克的未婚夫去世後，除了美國聯邦調查局幹員戴維斯‧沙利文外，每個人都認為她所聲稱的一切，只是為了博取他人的同情。於此同時，一名狡猾的精神病患為了替母親報仇，自美國亞特蘭大一所精神病院逃出。他母親的教派遭到由萊西‧夏洛克和狄龍‧薩文奇為首的美國聯邦調查局幹員摧毀，因此她臨死時要兒子替自己復仇。時鐘的滴答聲，猶如訴說著危險正向幹員們步步逼近。