...but with all the things that are bumping around in the night in this novel, that seems rather unlikely . Charles Hood takes on the case of a disappearing monozygotic twin who is involved in super-secret service. It could be a simple case of galloping nympho-itis or a complex plot to unlock the secret in the twins' mutual brainturst (twinship telepathy). Naturally it turns out to be the latter with Hood eventually locked in a monastic retreat for followers of one Zagora who preacher a philosophy of sanctification through sin and brings a strange ailment, the ""laughing death,"" on errant disciples..Then there's his pet vulture and chief aid, a freak with a horned beak, the ""birdman."" And it's blood and guts all the way to the local elite inner beauty sanctum with Hood peeking behind mudpacks and under ? It'll keep the men awake.