The Exorcist (film) film's plot. In the book, the spider-walk is somewhat more muted, consisting of Regan following Sharon around near the floor and flicking a snake-like tongue at her ankles. A take of this version of the scene was filmed but went unused. A different take showing Regan with blood flowing from her mouth was inserted into the 2000 Director's Cut of the film however. "The Exorcist" contained a number of special effects, engineered by makeup artist Dick Smith. In one scene from the film, Max von Sydow is actually wearing more makeup than the possessed girl (Linda Blair). This was because
The Exorcist III an effects-laden exorcism sequence featuring Nicol Williamson as Father Morning, a character added just for the new climax. Blatty had to make the best of it in the narrative while racing to complete the film. Blatty confirmed that when the possessed Karras speaks in an asexual voice, saying, "I must save my son, the Gemini", that this in fact is either a returned Pazuzu or, as Blatty put it, "Old Scratch himself" taking control. This ties into the revelation earlier in the film that the Gemini was sent into Karras' body as revenge for the Regan MacNeil exorcism. The altered