Once it starts pressure-cooking less than 20 minutes in, it sizzles with nail-biting and almost unbearably efficient tension in its Hitchcockian-influenced setups and auteurist style, with the master's wicked sense of dark humor. Also, quite notable is its use of speech and language to either convey understanding or alienation to foreign and/or impaired ears. Both as scary and funny as DePalma's Hitchcockian work.
I love this film, Extremely hard to find. unfortunately after this the director made AN AMERICAN WEREWOLF IN PARIS and seems to have never made another film. as bad as his second film was watching this one makes me believe he deserved another chance. This film is so original and has so many surprises it keeps you on your toes. Do yourself a favor seek it out and watch it.