The Blue Cross (G.K. Chesterton) Father Brown receives a mysterious letter suggesting that the church's priceless holy relic, the Blue Cross, will be stolen. In the church itself, he finds a piece of paper with the letter F, left there by the famous thief Flambeau, gone across Europe for the theft of priceless artifacts. Bishop Talbot is soon on the scene and makes arrangements to have the cross transported by the police to a safe location. Father Brown decides it would be safer in his possession. He is out not only out to identify the thief but also to save his soul