Pre-dating the release of The Exorcist (1973) this film is considered among genre fans to be one of the first films to deal with the theme of possession.
The first feature starring role for actor Perry King.
The film was bashed by critics upon release because of the disturbing scene where a young boy is forced to strip. In a 2004 Entertainment Weekly article author Stephen King cited the movie while addressing issues of censorship. King said had The Possession of Joel Delaney been released today it would be rated NC-17 for that scene alone.