The Devil's Daughter (Italian title: La Setta), also known as The Sect and Demons 4, is a 1991 Italian horror film co-written and produced by Dario Argento and directed by Michele Soavi. The film stars Kelly Curtis and Herbert Lom.
Following a 1970s-set prologue, the film takes place in present-day Frankfurt, Germany. Miriam Kreisl (Kelly Curtis) is a young schoolteacher who narrowly misses running down with her car an old man carrying a box. Reluctantly, she takes in Moebius Kelly (Herbert Lom), the mysterious old man. What she doesn't know is that their meeting is no accident. Moebius is the elder of a Satanic sect and she has been chosen to give birth to the son of Satan.