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 III and tells Karras to fight the Gemini. Karras regains his free will briefly and orders Kinderman to shoot him. He fires his revolver several times, hitting Karras in the chest, fatally wounding him and stopping the Gemini Killer. Kinderman puts his revolver against Karras' head and fires. William Peter Blatty, who wrote the original "Exorcist" novel and the screenplay for its film adaptation, initially had no desire to write a sequel. However, he eventually came up with a story titled "Legion", featuring Lieutenant Kinderman, a prominent character in the original "Exorcist" novel (though played a minor role in the eventual