It was also the second appearance of "The Red Lips", a duo of female secret agents who could continue to show in various films made by Franco into the 1990s.

Two Undercover Angels was part of a three-picture deal director Jesús Franco had with the production company Aquila, run by Adrian Hoven, Michel Lemoine and Pier Caminneci.

[2] It was a West German and Spanish co-production, developed by the Munich-based Aquila, and Films Monta S.A. based in Madrid.

[6] This includes changes in when the credits appear, some editing, and cuts the cage dancing in the night club sequence while the American version removes the North African establishing shots.

[7] In 1999, Anchor Bay Entertainment released the film as Two Undercover Angels along with the two other Aquila productions on home video as part of their "Eurotrash" series.