Blood and Black Lace

6 donne per l'assassino is a movie starring Cameron Mitchell, Eva Bartok, and Thomas Reiner. A masked, shadowy killer brutally murders the models of a scandalous fashion house in Rome.
Isabella, a young model, is murdered by a mysterious masked figure at a fashion house in Rome. When her diary, which details the house employees many vices, disappears, the masked killer begins killing off all the models in and around the house to find it.