Kim Novak reportedly enjoyed a lot of latitude on the set because she was involved with director Richard Quine and used that latitude to make unsolicited suggestions to various crew members. However, when Novak tried to make suggestions to Kirk Douglas on how he should be acting, he took offense and the result was a chilly relationship between them off-set.
Some set elements are reused from a previous Richard Quine-directed film, Una strega in paradiso (1958), which also starred Kim Novak and featured Ernie Kovacs. In particular, lamps in Roger Altar's apartment in this film had appeared in Shep's apartment in Bell. Both films shared set decorator Louis Diage.
When Margaret and her mother are talking in the living room, her mother starts to read a copy of Vogue magazine - it's the January 1, 1957 issue.
Strangers When We Meet (1960) is ranked at 955 greatest movie of all time according to TSPDT's 1,000 Greatest Films listing.
Kirk Douglas drives a 1957 Ford convertible (though the top is never down), and Kim Novak drives a brand new 1960 Ford Falcon (its first year of production).