Kill, Baby, Kill (Italian: Operazione paura) is a 1966 Italian horror film by director Mario Bava. Slant Magazine called it "arguably Bava's greatest achievement", giving it four stars out of a possible four. In 2015, Time Out conducted a poll with several authors, directors, actors and critics who have worked within the horror genre to vote for their top horror films. Kill, Baby... Kill! was ranked number 56 on the list of the top 100 horror films of all time. Taste of Cinema observed that "Martin Scorsese called this Bava's best film...probably the most successful realization of Gothic horror-meets-bad-acid-trip."