When his father Professor Jules Heitz and brother Bruno die under mysterious circumstances, Paul Heitz travels to a small town to determine what is going on. It's the early 1900s and he finds villagers who are wary of strangers and apparently live in fear, particularly when there is a full moon. He hears of the legend of Megaera, a Gorgon so hideous that to look at her will turn you to stone. Of particular interest to him are Dr. Namaroff and his attractive assistant Carla Hoffman.
Brought back from his dead mouldering remains with blood drooled on them by one of the bats he commands, Count Dracula once again spreads his evil from his mountaintop castle. When libertine Paul Carlson disappears one night, his more sober brother Simon and his girlfriend trace him to the area, discovering a terrified populace. Thrown out of the inn, they make their way, like Paul before them, towards the sinister castle and its undead host.
When Kathy Thorn (Lee Remick) gives birth to a stillborn baby, her husband Robert (Gregory Peck) shields her from the devastating truth and substitutes an orphaned infant for their own - unaware of the child's satanic origins. The horror begins on Damien's fifth birthday when his nanny stages a dramatic suicide. Soon after, a priest who tries to warn Damien's father is killed in a freakish accident. As the death toll mounts, Robert realizes his son is the Antichrist and decides he must kill the boy to prevent him from fulfilling a cataclysmic prophecy.
