This movie was originally intended to be a pilot for an espionage television series, in the style of Callan (1967).
Sir Dirk Bogarde and Ava Gardner appeared in The Angel Wore Red (1960). In the earlier movie, Gardner got first billing, but in this movie, Bogarde got top billing.
The main poster had artwork designed by Robert Tanenbaum.
John Levene (Adams) stated in interviews that he had such a horrible experience while making this movie, that he gave up acting because of it. He returned with CanniBallistic! (2002) after a long absence from the big screen, but did some work on video and television in-between.
The name of the spy organization was the "Western Intelligence Liaison". MI5 is also referenced in the movie.