Jake Travis's assignment is to kill an international assassin who targets the loved ones of Special Ops personnel. The assassin is known to dress as a Cardinal and take contemplative strolls in Kensington Gardens. Jake completes his task but soon learns that he "clipped the wrong bird." He has killed a popular and progressive Cardinal. Jake must now track down a woman who can lead him to the real killer, before he strikes again. Meanwhile, Jake is obsessed with the central question: why did the Cardinal use him to end his life?