Originally intended to be the last of the "Falcon" movies, as George Sanders wanted out of the series.
At the fashion show it is mentioned that the garments conform to government wartime regulations. The U.S. War Production Board had just issued Limitation Order L-85 that restricted the amount of textiles used in women's clothing. Pleats, ruffles, patch pockets, attached hoods and shawls, and full-length sleeves were prohibited. Hems and belts could be no wider than two inches. There were exemptions for bridal and maternity wear and for religious vestments.
Tom Conway (Tom Lawrence) was the real life elder brother of George Sanders (Gay Lawrence). This film was Sanders' final appearance as "The Falcon," a role of which he had grown tired. Sanders passed the baton to Conway, who played the role in nine subsequent films until 1946.
This is one of only two films in which both George Sanders and his brother Tom Conway appear. The second is Death of a Scoundrel (1956). They played brothers in both films.
The fourth of sixteen movies for the suave detective nicknamed "The Falcon" starring both Tom Conway (his first in the series) and George Sanders (his fourth and final in the series).