The Monarch of Murder
Published in the 08/1935 issue of Secret Agent X.
"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."