Both this and Samuel Fuller's previous movie Shock Corridor (1963) were rejected for UK cinema certificates and remained unavailable until 1990.
When Griff and Kelly are talking on the park bench just after her arrival in town, she is reading "The Dark Page," a 1944 novel by Samuel Fuller that was the basis for Scandal Sheet (1952).
Samuel Fuller wrote in his autobiography that Constance Towers actually shaved her head for the opening scene, "without any qualms." However, Towers denied this in an interview, and her bald cap can be clearly seen in some shots.
When Kelly arrives in Grantville, a movie marquee displays the title of the film Shock Corridor (1963), Samuel Fuller's previous film.
"Nothing is more terrible than active ignorance" is a quote from Johann Wolfgang von Goethe. It is also sometimes given as "Nothing is more terrible than to see ignorance in action."
Samuel Fuller: It is Fuller's hand from the left side of the screen that grabs Kelly's wig off her head in the infamous opening scene. If one freeze-frames the scene you can see Fuller's face, his eyes covered with sunglasses.