The movie is based on a memoir, so any predicatblity in the story has to be attributed to real life itself. Carrey Mulligan performs well as the 16 year old who is too smart for her own good. Sarsgaard is equally good as the man who seduces her and charms her parents. The period is captured well -- early 1960's, The Camelot and pre-Beatles era that was a more innocent time than the later years of the decade. So it's understandable that the girl's parents are just a wee bit unsophisticated. (dim) For such a quiet story, the film moves at a brisk 90 minutes. This is not for the District 9 crowd. It is something of a cautionary tale for young ladies who think they are wise beyond their years.