May 6, 2021

This Day in Halloween: Mario Bava's "Black Sabbath" featuring Boris Karloff opens in the U.S. in 1964. / Illustration by Angela Smith

Black Sabbath opens in the U.S. in 1964. Mario Bava’s anthology horror film stars Boris Karloff, who contracted pneumonia during the production. The film is still regarded as one of Italy’s best horror films.