[4] The episode "The Birds on the Wing" (aired 11-26-49) is especially notable for its beginning and ending, both uncharacteristically breaking the fourth wall.

The musical cue that plays over the opening narration in the series' first two episodes (where Marlowe recites the opening sentences of Chandler's original story "Red Wind") is a theme that would reappear prominently in Murray's 1954 score for Alfred Hitchcock's To Catch a Thief.

The lone exceptions were when Ford Motor Company and, subsequently, Wrigley's Gum sponsored it during part of 1950.

He contented himself with the weekly royalties he received for the use of his character, while professing himself 'moderately pleased' with Gerald Mohr's portrayal of Marlowe.

Norman Macdonnell was producer/director; Gene Levitt, Robert Mitchell, Mel Dinelli, and Kathleen Hite wrote the scripts; and Richard Aurandt was responsible for the music.

Performing alongside Mohr at various times were Jeff Corey, Howard McNear, Parley Baer, Lawrence Dobkin, Virginia Gregg, Gloria Blondell, and Lou Krugman.