Step 1 : Introduction to the question "Which band name itself after a 1963 Italian film starring Boris Karloff?"
..Black Sabbath is a 1963 horror anthology film directed by Mario Bava. The film is centered on three separate tales that are introduced by Boris Karloff. The first, titled "The Telephone", involves Rosy who continually receives threatening telephone calls from an unseen stalker. The second is "The Wurdulak", where a man named Gorca (Karloff) returns to his family after claiming to have slain a Wurdulak, an undead creature who attacks those that it had once loved. The third story, "The Drop of Water", is centered on Helen Corey (Jacqueline Pierreux), a nurse who steals a ring from a corpse that is being prepared for burial and finds herself haunted by the ring's original owner after arriving home.