High Adventure 73: Secret Agent X- Ambassador of Doom by Brant House
Through night skies Secret Agent "X" sped to Washington - summoned as a pall of horror hung over the nation's capital. How ghastly that horror was to become even he did not guess - until he came face-to-face with this green-masked ambassador from hell's own legation and his horr ... read more

Secret Agent X: Legion of the Living Dead by Brant House
From the pages of the September, 1935 issue of Secret Agent X comes this sensational full length novel, Legions of the Living Dead.

"From nowhere hurtled that black death car. And from nowhere came its grisly occupants. They were not of the earth, for their hum ... read more

Secret Agent X: The Hooded Hordes by Brant House
With boiling lead that stilled men's tongues, and bombs that mangled human bodies, the hooded hordes threatened America. Their power was spreading from State to State like a hideous blight. Their spies seemed everywhere - and against this dread secret society went the Man of a Th ... read more

Secret Agent X: The Torture Trust by Brant House

"The Torture Trust" they called themselves — that unholy trio who met in a hidden room in a deserted part of the city. Brilliant men by day, leading scholarly and productive lives as far as the police and the outside world were concerned, secretly they donned black cloaks and ... read more

Secret Agent X: City of Madness: Dec. 1936 by Brant House

CITY OF MADNESS by Brant House. Secret Agent X knew that the destiny of millions of honest people rested in his judgment of a beautiful but crafty woman. And all the Agent's plans fell to pieces when his most important confederate, Harvey Bates, rebelled against orders. For Ba ... read more

Secret Agent X: Corpse Cavalcade June 1935 by Brant House

Seven corpse-faced denizens of doom swept down on the Suburban Trust. Red-tongued machine guns blasted the way for their scavenger-like leader. But that leader did an amazing thing. He brought money into the bank, then disappeared with his buzzard brood. . . . And Secret Ag ... read more

Secret Agent X: Death's Frozen Formula Feb 1937 by Brant House

DEATH'S FROZEN FORMULA by Brant House. Strange human derelicts left newsreel showings with evil, hidden intent. And Agent X had to pierce an unfathomable enigma -- while sinister gusts of hell's killing cold trapped X in a murder maelstorm.

Plus short stories from Ro ... read more

Secret Agent X: Servants of the Skull: Nov 1934 by Brant House

From the macabre maze of a labyrinthian world, the Skull, master of murder, reached out and made of mighty men imbecilic wrecks, derelicts, no longer human. Only one man could match brains with the sinister Skull —- and that was Secret Agent "X". But the Skull did not fear " ... read more