A Scanner Darkly is a 2006 American animated science fiction thriller film directed by Richard Linklater based on the novel of the same name by Philip K. Dick. The film tells the story of identity and deception in a near-future dystopia constantly under intrusive high-technology police surveillance in the midst of a drug addiction epidemic. The film was shot digitally and then animated using interpolated rotoscope, an animation technique in which animators trace over the original footage frame by frame, for use in live-action and animated films, giving the finished result a distinctive animated look. The film was written and directed by Richard Linklater and stars Keanu Reeves, Robert Downey, Jr., Woody Harrelson and Winona Ryder. Steven Soderbergh and George Clooney are among the executive producers.