Trevor Howard stars in this quintessential post-war British noir, playing a      Royal Air Force pilot who is double-crossed after he becomes involved in the     black market. He breaks out of Dartmoor Prison, intent on getting revenge.       Howard is terrific in the lead performance. Exceptional cinematography by Otto Heller (Peeping Tom, The Queen of Spades).                         Alberto Cavalcanti---Great Britain---1947---103 mins.