The Traitor (1957 film)

The Traitor is a 1957 British drama film directed by Michael McCarthy and starring Donald Wolfit, Robert Bray, Christopher Lee and Karel Stepanek. A former resistance fighters tries to discover the traitor who has betrayed his colleagues in the German resistance during the Second World War. The film was also shown in the US with the title The Accused. It was not released in the US until 1960.

Source: Wikipedia