When Custer tells Inspector Gunther he plays "Spit in the Ocean," that refers to a card game that is a variation of draw poker.
There are, in fact, rail sidings leading from Grand Central Terminal to underneath the Waldorf Astoria Hotel. Track 61 was used for private rail car service, but only on a few rare occasions, such as President Roosevelt's campaign stop in New York City in 1944.
Sixth billed Sam Levene as Inspector Gunther has more dialogue than anyone else in the movie, including its top billed star Van Heflin.
The $50,000 Mr. Furness offers Mida is worth about $1,000,000 in 2024.
This film was a success at the box office, earning MGM a profit of $86,000 ($1.7M in 2024) according to studio records.