Harry Bacon, former head of psychic investigations for the Ministry of Defence, veteran of countless paranormal encounters, is about to do the unthinkable: retire. Then an unexpected message leads him into what could become his greatest – and strangest – case yet, a case whose foundations are inextricably linked to his own past. Rule Zero is a darkly comic thriller packed with psychic spies, prescient journalists, contact clairvoyants, repressed supermen, a lethal cocktail waitress and a roving troupe of ape-like security guards. Britain will never be the same again.