If you can identify this one, ...
Question: If you can identify this one, you really are the flick diva. The film I remember was released sometime between 1964 and 1972. It was about models, or perhaps actresses, being murdered by someone wearing a pantyhose mask and a trench coat. In the end, the killer turned out to be one of the girls. Can you help me identify the film?
Answer: Mario Bava's Blood and Black Lace (1965), the template for 20 years of baroque Italian horror films.