The demon is ultimately exorcised out of Regan's body after Merrin dies of a heart attack, and Father Damien Karras sacrifices himself by luring the demon into his body and then hurling himself through a window and down the now famous flight of stairs leading down to M Street NW, in Georgetown. In "", Pazuzu is named as the demon and returns to haunt Regan. There are flashbacks of Merrin battling the demon in Regan and also flashbacks of Merrin's exorcism of Pazuzu from a boy named Kokumo in Africa many years earlier. In the end of the film, Regan and Father Lamont, who has been trying to help her, but has become possessed by Pazuzu, return to Georgetown. After a struggle, he declines Pazuzu's offer of power and Regan banishes Pazuzu, appearing in the form of locusts. "The Exorcist III" takes place 17 years after the original film. The film was adapted by Blatty from his novel "Legion". Lieutenant Kinderman, who was also in the original film, has been on a murder case about mysterious deaths committed by an anonymous person. It is later found out that Pazuzu convinced the Gemini Killer, who died at the same time as Father Karras, to inhabit his body as punishment for saving Regan. However, as result of his suicide, his brain was severely damaged, which demons/spirits need when they possess a body. The Gemini Killer spent years stimulating his brain so he would be of use, and then began committing murders by possessing the bodies of the other inhabitants of the hospital where Karras had been staying. In the end of the movie after a turbulent exorcism is done, Karras regains control of the body and asks Kinderman to kill him, which he does by shooting him in the head, keeping him from being possessed again. In "" and "", Pazuzu is shown in his first encounter with Father Merrin in Africa in the duel that "nearly kills Merrin", referenced in the very first movie. Although the plot of both of these versions center around Merrin's African exorcism many years earlier, they take a sharp departure from the original scenes in "Exorcist II: The Heretic" where Merrin exorcises a young boy named Kokumo on a mountaintop. No effort was made to keep the stories consistent beyond that central idea. In "The Exorcist" television series, which is presented as a sequel to the original film, Pazuzu continues its pursuit of Regan and possesses her daughter Casey.