Tentacles of terror reached over the country, spreading like a hideous blight through the cities of America. The underworld, welded together under the secret symbol of a monster of crime, was organized as never before. And Secret Agent "X," master man-hunter went up against a genius of crime who stooped even to the ghastly horrors of medieval torture.
Octopus Of Crime – A monstrous octopus of evil gained slow power over the underworld. His identity as mysterious as that of Secret Agent "X" himself, this apostle of wickedness led the horror hordes of the nation into a bloody carnival of crime.
Chapter I – Guns in the Night
Chapter II – The Law's Net
Chapter III – Plunging Peril
Chapter IV – Wings of Destruction
Chapter V – The Mark of Horror
Chapter VI – Night Visitor
Chapter VII – Black Horrors
Chapter VIII – Crimson Fangs
Chapter IX – A Fresh Clue
Chapter X – The New Commissioner
Chapter XI – Trapped by Science
Chapter XII – Death in the Night
Chapter XIII – The Sky Attack
Chapter XIV – The Crash!
Chapter XV – The Way of the Octopus
Chapter XVI – Passwords to Hell
Chapter XVII – Death to the Agent
Chapter XVIII – Thundering Doom
Chapter XIX – Criminal Cunning
Chapter XX – The Mysterious Message
Chapter XXI – Tentacles of the Octopus
Chapter XXII – The Octopus Speaks Again
Chapter XXIII – Sky Monster
Chapter XXIV – Who is the Octopus?
The Secret Council – Behind the Scenes with Secret Agent "X"
