The last film noir roles of both Barbara Stanwyck and Raymond Burr. It also comes towards the ends of their film careers in general. Both would soon transition to working primarily in television and appearing only occasionally in movies. Burr notably moved from the villainous characters he often portrayed in films to long-running success as the heroic defense attorney on Perry Mason (1957). Stanwyck would later go on to star on The Big Valley (1965).
"Love Story" and "The Deadly Triangle" were working titles.
The car Kathy drives is a 1951 Ford Custom De Luxe convertible. With the optional V-8 engine and automatic transmission, in excellent condition this car could fetch upwards of $50,000 at auction in 2017.
The reproduction painting in the Doyles' bedroom is The Flower Carrier by Diego Rivera.
Royal Dano (Charlie Alidos) would later appear on episodes of Perry Mason (1957), which starred Raymond Burr. Fay Wray (Alice Pope) would later appear on episodes of The Big Valley (1965), which starred Barbara Stanwyck.