This movie helped launch Roman Polanski, Robert Evans and Paramount. Notice the use of red and green to represent evil and good.
25: Rosemary and Guy eat dinner with their strange new next door neighbors, they talk about travel, ridicule religion, and Guy's acting career. There's something about Minnie and Roman that doesn't seem quite right, and later Rosemary notes that some of the paintings have been removed from the walls. The birth of something new.
45: Rosemary is awake but drugged, not fully aware that she's being raped by the Devil. She's hallucinating she's on a sailboat in a storm. She's tied to a bed "down below" near a furnace and a group of chanting naked people including her husband, Minnie and Roman as red paint is brushed over Rosemary's body. In her drugged state, Rosemary apologizes to the Pope and says she was bitten by a mouse - earlier she ate chocolate mousse that contained a drug. Now that I'm aware.
60: Rosemary gets a new haircut and feels a sharp pain in her stomach. Dr. Sapirstein, her new doctor, says it's a natural expansion but the pain continues. It rains, she looks awful but her husband says she looks great. She cuts a steak, heats it for a few seconds, and eats it nearly raw. Her friend Hutch visits, learns she's pregnant, and wonders why she's lost so much weight. Roman visits while Hutch is there and they discuss the Tanis root necklace she wears. Hutch says he'll do some research on Tanis root and other things. Later, Hutch goes into a coma and dies. Earlier, two others who seemed to be in the way of Roman and Minnie were killed, so Hutch's coma doesn't come as a surprise. There's no going back now.
-45: Rosemary uses Scrabble pieces to discover that Roman is the son of a well known witch from a book Hutch gave her called "All of Them Witches." Rosemary gives her husband the book, which he later throws away. Rosemary visits Dr. Sapirstein and tells him about Roman and Minnie, and soon Roman and Minnie leave the building and say they won't be coming back for a long time. Discovery.
-25: Rosemary is in Dr. Hill's office and says "God bless Dr. Hill," she believes everything is going to be okay, she thinks she's going to a nice clean hospital with no visitors. From her purse, she removes pills that Dr. Sapirstein prescribed. "Unspeakable monsters" she says repeatedly. She has a quick dream of her with a perfect baby showing it to others. But her husband, Dr. Sapirstein, and Dr. Hill arrive and tell Rosemary to go with them or she's going to a mental hospital. Eventually, we see that Roman and Minnie never left the building and that the baby is the Devil's, and that her husband is in on it because they're helping him succeed as an actor. And the final resolution is a shocker: Rosemary intends to help the baby grow up. The final turning point.