This is one of several fictional characters named Steve Martin before the iconic comic-actor would make it a household name in the 1970's. The most famous being Raymond Burr's character in the Americanized version of the original Godzilla, which was before this movie, and Lex Barker in Code 7, Victim 5 after.

Cornell Borchers had played Michel Ray's adoptive mother in The Divided Heart (1954).

Troy Donahue makes an uncredited appearance at the beach.