Synopsis Blizzard, deranged from a childhood operation in which both his legs were amputated after an accident, becomes a mob leader of the San Francisco underworld. Out for revenge against the surgeon who performed his operation, he undergoes brain surgery which has a chance of altering his anti-social behavior. What was the secret of the tremendous power exerted by Blizzard over everybody he met? Why did Rose, the secret service operative, detailed to spy on Blizzard and ferret out his secret, end by falling in love with him? Why did every crook in San Francisco tremble at his frown? Why did he hold thousands in peril of their lives?