When I first viewed this film twenty or so years ago, I was under the impression that it was based on actual events. This belief of course added to the sense of drama and mystery. I subsequently learnt that the film is based on an historical novel. On first viewing it is difficult not to be impressed with the amazing cinemaphotography. Seeing the film again recently it seemed much less impressive. The story line is flimsy and many of the shots seem posed and artificial. The stand out acting performance by Rachel Roberts.