Exorcist II: The Heretic

Owing to his experience with exorcisms, Father Lamont is chosen by his superiors to investigate the death of Father Merrin, who died during the exorcism of young Regan MacNeil . Lamont finds Regan under the psychiatric care of Dr. Tuskin . By hypnotizing the girl, he is able to learn that Merrin previously exorcised the same demon from a boy in Africa. Hoping for answers, Lamont travels to Africa in search of the youth.