This film's leading lady, Andrea Dromm, rose to fame (very briefly) in a series of TV commercials for National Airlines, playing a sexy stewardess and coining the (very briefly) popular catchphrase, "Is this any way to run an airline? You bet it is!" The phrase was often parodied, and it was referenced in several reviews of this film (i.e., "Is this any way to make a movie? You bet it isn't" ).
Author Craig Hamrick writes a fair amount about this film in his book "Big Lou: The Life and Career of Actor Louis Edmonds." Hamrick did extensive research about Edmonds for the book, and after months of searching was able to unearth the only known copy of this film: a badly scratched, black-and-white, Spanish-dubbed version (stills were included in Hamrick's follow-up book, "The Big Lou Scrapbook.") In "Big Lou," Emdonds comments briefly, and rather dismissively, about the film--but it is one of the few published references to this practically forgotten movie. Immediately after finishing his work in the film, Edmonds returned to New York City and joined the cast of the Gothic soap opera Dark Shadows (1966) as Roger Collins.
The main title theme, "Come Spy With Me", is performed by Smokey Robinson and The Miracles, and it actually was a bigger hit than the movie it came from.
This picture was one of four 20th Century-Fox movies featuring female spies that were released during 1966-67. The films were Fathom (1967), Caprice (1967), Come Spy with Me (1967) and Modesty Blaise (1966).