There are not worse mystery stories than those that are resolved by a confession. This picture starts with a confession, and starts well. But the very complicated, and very absurd story's denouement is another confession: The real murderer confesses by shooting people. Hitchcock himself said to Francois Truffaut that he did not remember why he bought the old play in which this picture is based. Lots of coincidences do not construct a suspense story.The picture is saved by the performances of Montgomery Clift (even if it is slightly monotonous), Anne Baxter and Anny Ondra. Imagine a Hitchcock picture without humor!