Dr. Frank Clevenger, return to take on a murder case like no other. John Snow is a brilliant inventor who has made millions from his genius in aeronautics. He has everything a man could desire: wealth, family, even a beautiful mistress. But he also has a brain disease, a rare form of epilepsy, that threatens his most valuable possession -- his mind. Only one doctor may be able to cure it surgically, but at a terrible cost, one that Snow reveals to no one: Snow will have no memory whatsoever of his past - of its emotional entanglements or its secrets. He will be abandoning everyone he has ever known. But the night before he is scheduled to undergo the operation, he is found near the Massachusetts General Hospital, dead of a gunshot wound. Did he commit suicide, as the police suspect - or was he murdered?