It told about Stephen Neale (Ray Milland) who was recently released from Lembridge Asylum during wartime England (during the Blitz) - he had been incarcerated for two years for the mercy-killing of his wife. He became unwittingly involved with a Nazi German spy ring (fronted by a charitable organization) when he guessed the weight of a raffle cake - hiding microfilm - at a village fair, the film's MacGuffin.
