Toni Collette takes top billing in this initially intriguing but ultimately unsatisfying psychological thriller. The film's set primarily in Yorkshire, where forensic psychiatrist Collette is asked by cop Richard Roxburgh to interview a troubled public schoolboy (Eddie Redmayne). He has apparently murdered fellow student Tom Sturridge, but there's a lack of hard evidence. The dysfunctional relationship between the two boys is told in lengthy flashbacks and Redmayne, in particular, is convincing as the disturbed young man who may just be a victim rather than a killer. Gregory Read's confident direction generates a fair bit of menace, too, and he certainly keeps you guessing right to the end. However, the plotting is so artificial that by the finale you're unlikely to care either way.