In Post-war America fear took on new forms. The witch-hunt of superpower espionage swept the West. If you weren't a patriot you were suspect.
We needed heroes. We needed Mr X.
Herbert Marshall played the role of agent Ken Thurston the 'Mr. X' who travelled far and wide across the globe as he unravelled dangerous cases. In this he was ably assisted, or perhaps annoyed, by a comedic side-kick; Pegon Zellschmidt.
The Nation and ourselves were in safe hands even if he wasn't.