Romario De la Rosa’s review published on Letterboxd:
Rosemary's Baby is really scary, it's one of those movies that refrains from using cheap scares and jump scares and concentrates on creating the environment in which you know something is wrong and just hope that the main character can get out of it.
Mia Farrow is really the star of this movie, her acting as Rosemary is really wonderful, her physical change during the movie and how she is able to convey her terror charges the movie to the level it has.
I think the ending is really scary and Mia Farrow sells the scene really well. Mother's instinct beats any fear.