I agree completely with Dara. I was 20 when I saw it and I would recommend reading the book first, which gives you the background for Deborah's dreamlife. The film can't even begin to show the cruel beauty of her inner world, and (perhaps appropriately) omits any reference to her ethnic and familial demons.

When I think of this movie, I see the look in Kathleen Quinlan's eyes. Her performance is precocious and utterly...amazing, especially for an actress just into her 20's. She seems possessed, wholly inhabited by the character of Deborah, and her scenes with Bibi Andersson are magical. I would credit the director and cinematographer with the wonderful feel of the movie, but Quinlan's portrayal of a young girl marooned in a parallel universe of her mind's own devising is timeless.