Trilogy of Terror is a 1975 American made-for-television anthology horror film directed by Dan Curtis and starring Karen Black. It features three segments, each based on unrelated short stories by Richard Matheson. The first follows a college professor who seeks excitement with her students; the second is about twin sisters who have a bizarre relationship. These two segments were adapted by William F. Nolan. The third, adapted by Matheson himself, focuses on a woman terrorized by a Zuni fetish doll in her apartment. Black stars in all three segments, and plays dual roles in the second.

Karen Blanche Black was an American actress, screenwriter, singer, and songwriter. She rose to prominence for her work in various studio and independent films in the 1970s, frequently portraying eccentric and offbeat characters, and established herself as a figure of New Hollywood. Her career spanned over 50 years and includes nearly 200 credits in both independent and mainstream films. Black received numerous accolades throughout her career, including two Golden Globe Awards, as well as an Academy Award nomination for Best Supporting Actress.