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The term "San Valentino di sangue" serves as a cultural marker for the Italian reception of the North American slasher boom of the early 1980s. While the original film, George Mihalka’s My Bloody Valentine (1981), is a Canadian production, the Italian title invokes a specific stylistic tradition: the giallo . By renaming the film, Italian distributors anchored it within a lineage of stylized murder mysteries (like Mario Bava’s Blood and Black Lace ).