Well as others have commented there is some great acting here. My favorite is Robert Shaw as the villain, but Martin Ritt as the inspector is also quite good.
The problem is that the plot mostly makes absolutely no sense (I can't believe they didn't somehow change what was in the book), and the denouement is more or less unfathomable. It's almost like they had a great setup and didn't know how to explain things or end them.
As others mentioned, the film is enveloped in fog and is quite grainy. Switzerland was never that foggy when I was there! And the music didn't really match the action on the film.
All in all, from what I can tell, skip this and try the book.
The problem is that the plot mostly makes absolutely no sense (I can't believe they didn't somehow change what was in the book), and the denouement is more or less unfathomable. It's almost like they had a great setup and didn't know how to explain things or end them.
As others mentioned, the film is enveloped in fog and is quite grainy. Switzerland was never that foggy when I was there! And the music didn't really match the action on the film.
All in all, from what I can tell, skip this and try the book.