Remember Paul Wendkos?

Reality and fantasy blend at a masked ball in Paul Wendkos' The Mephisto Waltz (1971)

Although a very prolific director (of mostly television) from the 1950s to the ’90s, Paul Wendkos isn’t a well-known name today, though at his best he had a real flair for unsettling visuals which suited the burgeoning paranoia of the ’70s. That style is well showcased in The Brotherhood of the Bell (1970) and The Mephisto Waltz (1971).