Nuance was not Donald Wolfit's strong suit, but he had presence and power in spades. He totally dominates this story with a bluster and conviction that keeps an uninspiring tale of the hunt for a Second World War traitor from falling flat on its face. As he showed in Operation Amsterdam, writer/director Michael McCarthy had a splendid sense of place, but no talent whatsoever for generating and sustaining suspense. It was a smart move casting Wolfit, Christopher Lee and Anton Diffring as a trio of shifty-looking suspects, but it all too quickly becomes clear in which direction the finger is pointing.

One time members of a resistance group come together every year to remember their dead leader, betrayed to and executed by the Nazis. When it seems that they might finally know the name of the traitor - and that he or she comes from within their own unit - their annual gathering becomes a deadly trial...