He chose you, honey! From all the women in the world to be the mother of his only living son!
A novel by Ira Levin, Rosemary's Baby became better known as a 1968 film by Roman Polanski. It starred Mia Farrow as the eponymous Rosemary, who moves in with her husband Guy into a New York apartment. Their neighbors are the Castevets, an elderly couple who seem nice enough at first. She has a dream where she is raped by a demon, only to learn she is pregnant a few weeks later. It is eventually revealed that the Castevets are part of a Satanic cult and that Rosemary's Baby is the Antichrist himself.The film was shot at the Dakota Apartments in New York City, where John Lennon lived and where he was murdered in 1980. The front entrance where Lennon was shot is shown more than once.
Though in the sequel novel, it turns out the first book really was a dream. A prophetic dream. DUN! DUN! DUN!
Aluminum Christmas Trees: Younger viewers may be a little surprised to see that Rosemary has to see if she's pregnant by visiting the doctor and getting her blood drawn, and then wait to find out the results later.
The Bad Guy Wins: The cultists succeed in their plan to spawn the Antichrist — and it seems that they've drawn Rosemary herself into their ranks.
The novel subverts it a little. While Rosemary does agree to raise her baby, it's because she hopes that she can influence him to reject his destiny and embrace his human side. This is shown when she demands that the baby be named Andrew (instead of "Adrian", after the cult's founder) and not wear black all of the time.
Wait a second... is that William Castle outside the phone booth?
That's Tony Curtis on the phone as the actor who's blinded and replaced by Guy in a play.
Clap Your Hands If You Believe: Inverted with Rosemary. She was raised Catholic but has drifted away from the church, and the Castevets find her a ripe target. Meanwhile, her stolidly Catholic sister can sense that Rosemary is in danger but Rosemary doesn't get anything of the sort.
Friends Rent Control: A struggling actor and his non-working wife living in a prewar apartment in an exclusive Upper West Side building that, even in the '60s, a hedge fund manager could barely afford in real life.
Although there might be a reason for this. The previous tenant, Mrs Gardenia, was an old woman who had lived in the apartment for decades. New York rent control only allows a rent to be raised a certain percentage above its previous price (the building superintendent points this out, saying that they would raise the rent if they were allowed). Rosemary and Guy might be renting the apartment for only a fraction more than Mrs Gardenia's original lease some twenty or thirty years before.
The book also explicitly states that Rosemary and Guy are living off residuals from a commercial Guy did years before. He would get a check every time the commercial aired.
Hollywood Satanism: Subverted. The Satanic coven is probably the closest you'll ever come to actual Satanists in a Hollywood film. The only ritual we see doesn't feature big black robes or child sacrifice, but rather a bunch of old people singing naked.
Jerkass: From the beginning Guy was more than a bit of a jackass. Seriously, what man repeatedly states to his wife's face that he thinks her haircut makes her look hideous and that it's the worst decision she's ever made?
The night after Satan impregnates her, Rosemary notices some scratches on her. Guy tells her he got too excited last night and then handwaves it as "Baby Night." Outside of the fact that Guy is covering for the fact that he let Satan rape his wife, he covers by saying he basically raped her unconscious body, scratching her in the process, and thinks that's an acceptable cover story.To top it off, he says "it was kind of fun, in a necrophiliac way".
Nightmare Face: In the final scene when Rosemary discovers her baby. While not disfigured, the look on Rosemary's face when she first sees her child, and her eyes go INCREDIBLY WIDE...you don't even have to see what the baby looks like, her horrified expression tells it all.
Also Satan, though (thankfully) we don't see too much of it.
Sequel: A Made-for-TV Movie (Look What's Happened to Rosemary's Baby) was produced in 1976, while Ira Levin penned a sequel to the novel (Son of Rosemary) in 1997.
Shoot the Shaggy Dog: Rosemary becomes suspicious of her husband and the neighbors he's befriended. She discovers her suspicions are all too horribly true. She tries to escape. She fails. It wouldn't have made any difference if she'd succeeded. In the end, she just gives up. What was at stake? Everything.
She doesn't give up in the book, though. She first plans to grab the baby and jump out the window with it to kill it, then plans to agree to raise it, with the intent of guiding it to be a good person and not evil.
Shout Out: Rosemary mentions in passing that she and Guy enjoyed watching a production of The Fantasticks the other day.
Significant Anagram: Steven Marcato the warlock. Roman Castevet the neighbor. They're one and the same.
Title Drop: In-universe example. Rosemary reads a book titled "All them witches". When she starts growing more and more paranoid she starts rambling "Witches... witches... all of them, witches... All them witches!" and then seems to laugh to herself.
The Unreveal: We never see Rosemary's baby's face, we're only told it has the eyes and feet of Satan.
Urban Legends: Church of Satan founder Anton LaVey wasn't actually involved in this film, and that isn't him in the demon costume.