Who wrote the 1967 horror novel "Rosemary's Baby"?

The story behind the answer

Ira Levin wrote the 1967 horror novel Rosemary’s Baby, a landmark in psychological and occult horror about a young pregnant woman entangled with a sinister New York circle. Its chilling, domestic realism and slow-burn paranoia made it a blockbuster and led to the acclaimed 1968 film adaptation by Roman Polanski, starring Mia Farrow—cementing the story’s place in pop culture.

A memory tip: think “Levin = suburban dread.” He also wrote The Stepford Wives and The Boys from Brazil—ordinary settings hiding extraordinary menace. Eliminate the distractors by era and signature works: Stephen King’s big horror novels came slightly later (Carrie, The Shining), Mary Shelley is the 19th‑century author of Frankenstein, and Robert Bloch wrote Psycho. Thus, Rosemary’s Baby belongs to Ira Levin.