Question: Which film was released first, En El Gran Circo or The Brain That Wouldn'T Die?
Sentence (from "The Brain That Wouldn't Die"): The film was completed in 1959 under the working title The Black Door but was not theatrically released until May 3, 1962, when it was released under its new title as a double feature with "Invasion of the Star Creatures".
Relevant evidence: No