Trivia

Ironically, this "pornography expose" was Edward D. Wood Jr.'s last legitimate film before delving into writing softcore pornography himself.

William C. Thompson, who served as the film's cinematographer, began his career in silent films in the mid-1910s. He was a longtime friend of director Edward D. Wood Jr. and worked on a number of Wood's other films. At the time of filming, Thompson was 70 years old and blind in one eye. He retired after filming The Sinister Urge, ending an over 45 year film career.

Edward D. Wood Jr. planned a sequel to this film titled "The Peeper," but he was never able to get any funding to film it.

The film includes a fight scene Ed Wood shot for his unfinished project "Hellborn," a.k.a. "Rock and Roll Hell." The scene is edited to include footage of Dino Fantini's character observing the events and some additional dialogue audio to connect the scene to the film's plot. The same fight scene was also used in another of Wood's films, "Night of the Ghouls" (1959).

The Sinister Urge is the final film appearance of veteran actor Kenne Duncan, who portrayed the role of Lieutenant Matt Carson. Duncan began his career at the end of silent era in the late 1920s and would go on to appear in approximately 250 films.

Edward D. Wood Jr.: one of the brawling "teenagers" fighting over porn in front of restaurant.