Bob's $120,000 life insurance policy payout, adjusted to inflation, is equivalent to over $1,200,00 in 2023.
The film was a box-office and critical failure. Anatole Litvak later said that the problem was that the writers never fully figured out the story, necessitating script rewrites throughout the filming. Litvak praised the extensive rewrite work of novelist Hugh Wheeler, but said it had not been enough to save the film.
The plane Robert is depicted as flying in is a 1944 Douglas DC-4, registration F-BBDR. Originally built as a C-54 Skymaster cargo and transport plane for the U.S. Army Air Force in WWII. It was converted after the war to a commercial passenger aircraft in 1946 and flew with American Airlines as N90437. It was acquired by Air France in 1949 and flew with them until 1967. After that it flew with various airlines, mainly in Africa, until it was scrapped in 1998.
The car Lisa drives is a 1959 Simca Aronde P60 Plein Ciel.
The picture on the bedroom wall in Lisa and Bob's apartment is a print of a painting by Henri Rousseau, called "The Sleeping Gypsy," painted in 1897. It is a fantastical depiction of a lion musing over a sleeping woman on a moonlit night.
Guy Laroche: this movie's costume designer as himself. Lisa works at the Guy Laroche boutique and he can be seen at the shop. He began his own high fashion shop in 1957. In 1982 he created the famous men's fragrance Drakkar Noir.