The Exorcist III
Fifteen years after the original film, the philosophical Lieutenant William F. Kinderman is investigating a baffling series of murders on Georgetown that all contain the hallmarks of The Gemini, a deceased serial killer. His investigation eventually leads him to a catatonic patient in a psychiatric hospital who has recently started to speak, claiming he is The Gemini and detailing the murders, but bears a striking resemblance to Father Damien Karras.
Actors
George C. Scott, Ed Flanders, Brad Dourif, Jason Miller, Nicol Williamson, Scott Wilson, Nancy Fish