You have to be quite grateful if filmmakers choose interesting literary sources, like the novels of Leo Perutz, instead of doing half-heartedly remakes or rip-offs of stuff you've seen a thousand times before. This movie is actually quite well made and better than average, but it loses the overall ambiguity of the novel, not only by concentrating on the love story contained within. But if you don't have any chance to get an english translation of the book - the story is absolutely marvellous and predates the paranoid masterpieces of Philip K. Dick.
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