Roman Polanski offers a top-rate character study in this classic black and white thriller. Catherine Deneuve plays a beautiful but reclusive young stylist whose calm demeanor begins to crack after she is left home alone for the weekend when her sister leaves on vacation. Her deepening psychosis leads to delusions, paranoia, and murder.. Polanski uses an array of visual devices to depict Carole's fading grip on reality, including visual metaphors like cracked cement or walls, as well as progressively removing more and more light from the film, leading the audience into the dark hole that Carole finds herself in. The film also implores a minimalist score, and the lack of music throughout the majority of the picture makes for a haunting emptiness that we share with the protagonist. Much of the success of the film can also be attributed to Deneuve's superior performance, which draws you in immediately in her charming innocence then continues to captivate the audience in her frighteningly convincing deranged state. Added to that are a heightened level of sexual tension and breaking of societal taboos that were far ahead of their time. This is an important film, and must be seen by all horror fans.