Exorcist II: The Heretic with the idea of directing a sequel, explaining that "every film has to struggle to find a connection with its audience. Here I saw the chance to make an extremely ambitious film without having to spend the time developing this connection. I could make assumptions and then take the audience on a very adventurous cinematic journey." Linda Blair agreed to reprise her role of Regan MacNeil for "Exorcist II", but refused to wear demon make-up (a double was used for the brief flashback scenes depicting a demonic Regan). Max von Sydow was persuaded by Boorman to reprise the role of
The Exorcist (film) minutes of music for the initial film trailer but audiences were reportedly too scared by its combination of sights and sounds. Warner Bros. executives told Friedkin to instruct Schifrin to tone it down with softer music, but Friedkin did not relay the message. It has been claimed Schifrin later used the music written for "The Exorcist" for "The Amityville Horror", but he has denied this in interviews. According to "The Fear of God: The Making of the Exorcist" on the 25th Anniversary DVD release of the film, Friedkin (known for his temper) literally took the tapes that Schifrin had recorded