It's just not very good. The premise, as pointed out by another reviewer, is completely absurd. The lead, Matthew Rhys, is fine but not any better or worse than any of the other actors. There is no apparent effort to make him different between the two characters he plays (e.g., change the way he combs his hair, give him a slight limp or manner of speech). The scenery, staging, period pieces (e.g., 1952 television, beautiful cars, period clothing, and sets) are all excellent. It's just not a good story even if you suspend reality. The main premise is that a complete stranger can be an exact fit for someone else. Remove the doppelganger part of the story and you have absurd characters in a boring story.
Review of The Scapegoat
