Curtains is a Canadian horror/suspense film that began production in 1980, but due to problems (tensions between producer and director perhaps chief among these difficulties) did not premiere in the United States until early 1983. The vibes were so bad that upon completion of the film, director Richard Ciupka had his credit changed to Jonathan Stryker, the name of the director in Curtains.
The movie did not find much of an audience theatrically but gained a second life through cable showings and video rentals, which is where I found it on a video store shelf around 1984.
Samantha Eggar stars as Samantha Sherwood, an incredibly committed actress who has herself thusly committed to a mental institution as method preparation for the title role in director Jonathan Stryker's (played by ham handed favorite John Vernon) newest film Audra. When Samantha finds out that Stryker has tapped several actresses to audition for Audra at a secluded estate; she breaks out angry and with revenge on her mind.
Curtains makes great use of the wintry setting and creates an increasingly chilly atmosphere with highlights being a creepy doll and a mask wearing murderer, wielding a nasty sickle.