Fourteen years after he was blinded in a WWII concentration camp, a Canadian perfume executive travels to London on business and recognizes the voice of the traitor who betrayed him and his fellow prisoners to the Germans.
Private Jupp is under arrest for a long list of charges and is being escorted by train to Catterick Camp. A girl is invited to share their compartment on the long train journey and the encounter reveals the truth about the escort as well as the prisoner.