with shooting commencing on either February 25 or 27. While filming, Karloff contracted pneumonia, which led to him having to rely on oxygen tanks after production ended. Bava was initially going to end the film on a shot of Jacqueline Pierreux's dead character. On the last day of filming, Billitteri suggested to not end the film on such a bleak image and told Bava to change it. Bava changed the ending to Boris Karloff's character of Gorka on horseback who cautions the audience to watch out for vampires. The camera then pans back revealing he is on a stuffed horse revealing the studio set and simulated effects. Post-production By the 1960s, Italian horror films such as Black Sabbath were more violent, sexualized and downbeat than the horror films created in America. American International Pictures focused on a youth-oriented audience whereas horror in Europe was intended for adults. This led to the American edit removing plot elements of prostitution and lesbianism and making the most altered of Bava's films on its English-language version. American International Pictures made changes to all three stories and intro segments in the English-language version of the film. The company re-arranged the order of the stories to start with "The Drop of Water", followed by "The Telephone" and then "The Wurdalak". Changes were then made to the plots, the most extensively edited being "The Telephone". In "The Telephone" any suggestion of a lesbian relationship between Rosy and Mary and references to prostitution were removed. The character of Frank is also no longer a pimp but a ghost who leaves behind a note that eerily writes itself as soon as the envelope it is contained in is opened. A new character is introduced named "The Colonel" who is Rosy's neighbor in the film. "The Wurdalak" features alternative cuts of certain scenes and has violence trimmed from the Italian version. "The Drop of Water" features the fewest changes from the Italian version. American International Pictures reshot the wraparounds with Boris Karloff in Los Angeles. It is unknown who directed these scenes. American International Pictures replaced Roberto Nicolosi's soundtrack from the original film with a soundtrack from Les Baxter. Kim Newman described Baxter's score as "inappropriate" with "each shock is accompanied by overdone 'scary music'". Both the Italian- and English-language films have a different look. Bava supervised the Italian-language version at Technicolor Roma under his own supervision, while American International