They Met in the Dark

After enemy agents plant false orders on Commander Heritage of the British Army, several ships are lost through the lack of a convoy escort. He is dismissed from service and returns to civilian life determined to clear his name. He finds a clue - a piece of paper with the words ‘Child’s Agency’ written on it. This, he discovers, is the name of a theatre company that is a front for enemy espionage. He must uncover the truth and convince the police to assist him.