Father Brown tries to transport a historically important cross to Rome engaging in battles of wits and faith with a thief and pursuing @花季传媒app每天免费三次@policeman. The thief, named Flambeau (Finch), is a master of disguise and is elusive, as Father Brown pursues him and tries to convince him to aband@世界上最帅的虫子@on his criminal career.　　During the making of the film, Alec Guinness was mistaken by a small boy for an actual priest. This episode appears to have played a part in Guinness's later conversion to Roman Catholicism.