Rosamund Pike's gleefully ruthless performance makes this film watchable. Peter Dinklage is excellent in his role as well and is a good foil for Pike's character. This film is pretty much always moving and entertaining, it just runs into some real lack of believability near the end. The entire premise is a bit shaky to believe, but the ending really goes overboard. It's also pretty hard to root for anyone in this movie because all the characters are so horrible and not super fleshed out. This film is worth a watch for the performances, just don't expect to feel hopeful about humanity after.
