In the movie, Connie (Abbe Lane), trusted only in one person, Chico (Xavier Cugat); as a matter of fact, they were married in real life.
King Brothers Productions sued Columbia and Clover Productions for damages of $1 million due to their using the title "Chicago Syndicate", claiming they registered the title The Syndicate in 1950.
The oddly-angled building with a clock tower seen under the closing narration is the Wrigley Building in Chicago, IL, completed in 1924 to house the corporate headquarters of the chewing gum company.
Amsterdam enters a diner on Randolph Street in the Loop, across the street from the Woods Theater. According to the marquee the theater is showing Sur les quais... (1954). It was demolished in 1989.
When managing editor David Healey says, "That was it--thirty" after paraphrasing a teletype report, this alludes to the "-30-" traditionally used to mark the end of a news story.