ROMAN POLANSKI
Bil’s rating (out of 5): BBBB.5.
United Kingdom, 1965. Compton Films. Screenplay by Roman Polanski, Gerard Brach, adaptation & additional dialogue by David Stone. Cinematography by Gilbert Taylor. Produced by Gene Gutowski. Music by Chico Hamilton. Production Design by Seamus Flannery. Film Editing by Alastair McIntyre.
A mentally unstable young woman living in London (Catherine Deneuve) is afraid of being left alone following a personal trauma. When her sister announces that she is going on a short vacation, Deneuve finds herself unable to deal with the solitude. This fascinating, extremely well-directed thriller by Roman Polanski features a kaleidoscope of phobias and nightmarish dream sequences where Deneuve believes that she is being attacked from all angles, even by the very walls of her house. Moody and gothic, featuring Deneuve in one of her most memorable roles.
The Criterion Collection: #483
Berlin Film Festival Award: Extraordinary Jury Prize
My Old Addiction.com 
Such an excellent psychological film that really burns itself into the memory.