Secret Agent X #17 Monarch of Murder

They called Secret Agent 'X', the Man of the Thousand Faces. Armed with his irresistible gas gun, wearing impenetrable disguises, 'X' infiltrates the darkest corners of the Underworld to crush all crime czars! A hell-ship was surging across the night waters of the Atlantic, a harbinger of doom bearing down on the shore of America. A mighty ocean liner it was, and one of its passengers came straight from the terror temple of His Satanic Majesty. That passenger was-Doctor Marko. The criminal aces of America had sent for him to lead the underworld's horror horde . . . . Another man was on the black waters of the Atlantic. He guided a speedboat to the gigantic liner. This lone man was Secret Agent 'X'-and he was going aboard the liner to stop Doctor Marko from reaching America. But even 'X' was stunned at Doctor Marko's ghastly greeting. Follow the Man of a Thousand Faces as he confronts the menace of Monarch of Murder, ripped from the pages of Secret Agent 'X' magazine, August 1935.