Lady of Death — Carroll John Daly

Meet Mr. Strang: In his skull is embedded a bullet. Through the underworld glide his lieutenants-men and girls willing to be tortured to death to aid him. He cares nothing for power, nothing for safety. He works for one thing-to crush the evils of parole, and to smash the mysterious, sinister figure who uses the parole system to take desperate criminals from jail, to rob and murder helpless citizens! Collecting the first half of this archetypal pulp superhero series.