Having lived through traumatizing events during WWII, Father Lankester Merrin takes a sabbatical from the Church to conduct archaeological excavations in British-administered East Africa. Merrin unearths an ancient Byzantine church believed have been built and then immediately buried to keep down evil from the crypt below. The natives are convinced that uncovering the church has unleashed a demon, and begin to violently clash with the British military troops. As the village rapidly disintegrates into chaos and war, Merrin must face-off with the demon which has taken possession of somebody close to him.
France, 1719. Louis 14th died four years ago, Philippe d'Orleans is the regent. He is a liberal and a libertine. His right-hand man, Dubois, an atheistic and cupid priest, as libertine as Philippe, tries to take advantage of a little rebellion lead by a Breton squire (Pontallec) and of the famine to become archbishop... Description of the life of the court in this period of transition where the French Revolution smoulders.
Jon Porter returns to his hometown after the sudden and bizarre death of his mother. He hopes to leave as soon as the funeral is over but it's too late. The sinister forces that caused his sister's brutal murder 30 years ago are back. Jon knows the nightmare can't continue. He must stand up to his fear and exorcise the demons who have risen again to take posession of his beautiful teenage daughter - body and soul.
In Moscow, the priest Owen hires a team to guide him in the underworld to find his friend Sergei that is missing while researching the legend about the existence of demons and an entrance to hell beneath the city.
Two trained men, one angry local woman and the local priest take on the local crime lord and his crew of narcotic smugglers and human traffickers in a small town next to the US-Mexico border.
Seth Gecko and his younger brother Richard are on the run after a bloody bank robbery in Texas. They escape across the border into Mexico and will be home-free the next morning, when they pay off the local kingpin. They just have to survive 'from dusk till dawn' at the rendezvous point, which turns out to be a Hell of a strip joint.
Set fifteen years after the original film, The Exorcist III centers around the philosophical Lieutenant William F. Kinderman who is investigating a baffling series of murders around Georgetown that all contain the hallmarks of The Gemini, a deceased serial killer. It eventually leads him to a catatonic patient in a psychiatric hospital who has recently started to speak, claiming he is the The Gemini and detailing the murders, but bears a striking resemblance to Father Damien Karras.