She is an ingenious assassin, with as many methods as identities; a master of disguise with an instinct for escape. She is Witch, and she makes for alluring prey. Wanted by the world's elite police agencies, she is doggedly pursued by three very different detectives — one woman and two men. Two are at the beginning of their careers, one is staking a lifetime's experience on tracking Witch down, and all three display a professional determination that veers dangerously close to obsession.