Spy-Master. Jeff Cardiff is the Spy-Master (later the Spy-Chief, later the Cloak), the lead spy-catcher for the Army. He is two-fisted, patriotic and persistent. His opponents are foreign agents, spies, and inventors, and the creations they either steal from the US or come up with themselves: the Detonator Ray, the Liquid Air Bomb, the Tornado Weapon, etc. The Spy-Master appears in stories with titles like "The Secret of the Plane Carrier,” “The Hypnotist,” and “The Breadloaf Bomber Plans.”
First Appearance: Big Shot Comics #1 (Columbia), May 1940. 9 appearances, 1940-1942. Created by Mart Bailey and Gardner Fox.
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