A Scanner Darkly is a 2006 animated science fiction film directed by Richard Linklater. Keanu Reeves stars as an undercover cop in a dystopian future where the government uses advanced surveillance technology to combat drug use. The film is notable for its unique animation style, which combines live-action footage with rotoscoping. A Scanner Darkly received positive reviews for its thought-provoking story, visual style, and Reeves' performance.