A landmark film of the horror genre, Rosemary's Baby (1968) also marked Roman Polanski's directorial debut in the US. The film, a runaway hit on release, was the prototype that inspired the onslaught of big-budget "A" horror films that followed: The Exorcist, The Omen, etc.
In the tradition of Hitchcock, Polanski achieves his effects with little explicit violence but with maximum finesse. Like Hitchcock, Polanski assiduously maneuvers the emotions of his audience. Drawn into Rosemary's point of view and her growing alarm, the viewer becomes ever more aware that something is amiss but, like Rosemary, doesn't grasp exactly what has happened until the final scenes.