Rosemary's Baby (1968)

Rosemary and Guy Woodhouse move into the Bramford, an iconic New York City apartment building with a reputation for mysterious happenings. They meet their eccentric neighbors, Minnie and Roman Castevet, an elderly couple who take an immediate interest in the young couple. Despite the Bramford's dark history, Rosemary and Guy decide to make it their new home.

As Rosemary tries to settle in, she starts experiencing strange occurrences and nightmares. One night, she dreams of being raped by a demon in a surreal ritual surrounded by the Bramford residents. She wakes up to find scratches on her body.

Rosemary becomes pregnant and her neighbors, particularly Minnie, become overly involved in her pregnancy. They recommend Dr. Abraham Sapirstein, a well-regarded obstetrician. As Rosemary attends her doctor appointments, she starts experiencing strange symptoms and pain, but Dr. Sapirstein assures her that it is normal and prescribes a strange-smelling drink for her health.

Rosemary connects the dots between her nightmares, the pain, and her neighbors, suspecting that they are part of a demonic cult. She shares her concerns with Guy, but he dismisses them as paranoia. Their relationship becomes strained as Guy starts spending more time with the Castevets and becomes increasingly ambitious in his acting career.

Rosemary befriends Terry, a young woman from the Bramford who later inexplicably commits suicide. Following Terry's death, Rosemary finds a book and discovers the names of famous individuals associated with witchcraft, including Roman Castevet.

Rosemary conducts her own investigation, unraveling the truth behind her neighbors and their sinister intentions. She concludes that they want her baby for their occult rituals, and Guy has willingly conspired with them in exchange for success in his career.

On the night Rosemary goes into labor, the Castevets invite her to their apartment. Despite her unease, Rosemary joins them, realizing that she has no other choice. As Rosemary gives birth, the cultists praise Satan and celebrate the arrival of the baby.

A few weeks later, Rosemary is presented with her baby, but something is wrong. The baby has glowing eyes and looks unnaturally sinister. Rosemary cradles the baby, resigned to her fate.

The movie ends with Rosemary looking coldly at all those involved, understanding the horrifying truth that her baby is the child of Satan himself, and she has effectively become a mother to the Antichrist.