She is an ingenious assassin, with as many methods as identities, a master of disguise with an instinct for escape. She is Witch, wanted by the world's most elite police agencies, hunted by three detectives whose professional determination veers dangerously close to obsession. Now her rumored next assignment will create political chaos around the globe. As Witch closes in on her target, the detectives on her trail must untangle a web of deceit that reaches into the highest ranks of international law and finance. International bestseller Ian Rankin delivers here a novel of espionage that rivals the classics of the genre, confirming his stature as one of the modern masters of suspense.