Secret Agent X: The Assassins' League, by Brant House (epub/Kindle/pdf)
Ripped from the pages of the October, 1937 issue of Secret Agent "X" magazines comes this sensational novel, The Assassins' League! When a wealthy arms manufacturer and a powerful gang lord both kill themselves -- when each had the world by the tail -- Secret Agent X looks into the suicides. What is the baffling, contradictory cause of their enigmatic deaths? Worse yet, through the course of his investigation, X's amazing disguises fail him at every turn. A strange, beautiful girl posses the power to see through his perfect impersonizations. Has the Man of a Thousand Faces finally met his match?