The movie might not be one of the best Hitchcock thrillers, but it is still a movie, with a very good plot. You feel the suspence right till the last scene. The movie is also correct in so many other ways. For example is it good to see, that the Germans speak German and the Danes speak Danish in contrast to so many other movies, where they just speak English with an accent. The downside of this movie might be, that you are able to enjoy it fully, if you do not have a certain background knowledge about the East German regime.