Crossplot (1969) was made by several production personnel who had worked on Sir Roger Moore's The Saint (1962) television series.
English language movie debut of Belgian actress Claudie Lange. She was featured in her largest English-speaking role.
Sir Roger Moore portrayed a character, who has said to have been a James Bond-type, prior to Moore first playing Bond in Live and Let Die (1973).
The studio that mainly distributed this movie was United Artists, which was the same studio that was responsible for Sir Roger Moore's James Bond movies right up until For Your Eyes Only (1981), after which it became MGM/UA after Metro-Goldwyn-Mayer's takeover of United Artists.
This movie featured Sir Roger Moore and Bernard Lee, who featured in the James Bond film franchise, as James Bond and M, respectively, in Live and Let Die (1973), The Man with the Golden Gun (1974), The Spy Who Loved Me (1977), and Moonraker (1979). This is the only theatrical movie, outside of the Bond movies, that the two acted in together.