Given the legal baggage that comes with 'Rosemary' filmmaker Roman Polanski, James had to weigh the cons before finally committing and "making sure that there was a separation between ['Apartment 7A'] and the original film’s creators not being involved in this one.

The film attempts to fill in the backstory of Terry Gionoffrio, a minor character from “Rosemary’s Baby.” Set in the months leading up to the events of Roman Polanski’s 1968 classic, “Apartment 7A” aims to explore Terry’s life as she navigates her dreams of Broadway stardom while becoming entangled with the sinister Castevets.

Paramount+ is adding to the “Rosemary’s Baby” storyline with a new prequel starring Julia Garner. “ Apartment 7A ” is available to stream now on Paramount+ exclusively. Watch it for free with a trial from the streaming platform.

A fantastic follow-up to James' scary-as-hell feature directorial debut, Relic, Apartment 7A is an exhilaratingly frightening tale of ambition, betrayal, and bodily autonomy that fits slyly with its source material, yet makes a timely statement all its own.

The Paramount+ original 'Apartment 7A' plays in a familiar sandbox, but the Julia Garner horror film tires to pave its own path on occasion.

Fantastic Fest: Dianne Wiest steals scenes in a movie that can’t quite escape Roman Polanski’s shadow

While walking through the backstory of a familiar Rosemary's Baby character, Apartment 7A also features a diverse set of songs as background scores.