Trivia

In 1967, Elizabeth Montgomery appeared in the audience of the third episode of The Carol Burnett Show (1967), where they mentioned working on this movie four years earlier. Montgomery joked that when the movie was shown on her airline flight, seventeen people walked out.

Carol Burnett's film debut.

Stella Stevens, who at the time was under contract with Paramount, was considered for the Jill St. John role but was chosen by Jerry Lewis as his leading lady for The Nutty Professor. She later costarred with Dean Martin twice at Columbia Pictures.

Elizabeth Montgomery and Dean Martin died within seven months of each other; she on May 18, 1995 and he on December 25, 1995.

At 37:10 in the movie, when Melissa comes to visit Jason onset, the string music playing is very reminiscent of the theme to Bewitched, which started a year later.