Paramount Pictures, Associated Capital, Capital Equipment Leasing, Howard W. Koch Productions, Gene Kirkwood Productions
"They were all drawn to the keep. Tonight, they will all face the evil."
Set during World War II, a German army garrison is sent to guard a mountain pass in a village in Romania's Carpathian mountains and sets up barracks in an ancient stone fortress. Two of the soldiers unwittingly release a mysterious entity that kills or corrupts those within its influence, drawing the attention of a Gestapo commander, a Jewish scholar, and a mysterious traveller.