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The Cases of Mr Ace is a 1947 ABC radio crime drama starring George Raft. It was an unofficial spin off from his film Mr. Ace (1946) although it was very different form that film.
Episodes went for 30 minutes.
Raft played Eddie Ace, owner of Ace Detective Agency on Sixth Avenue in Manhattan.
The series later became the radio and TV series The Cases of Eddie Drake.
Video The Cases of Mr. Ace
References
Source of the article : Wikipedia