Father Brown tries to tra nsport a hist oricall y importan t cross to Rome engaging in battles of wits and f aith wi th a thief and pursuing policeman. Th e thief, n amed Flambea u (Finch), is a mas ter of disguise and is elusive , as Fa ther Brown pursues him and tries to conv ince hi m to abandon his crimina l career. Durin g the ma king of the fil m, Alec Guinn ess was mista ken by a smal l boy for a n actual priest. This e pisode a ppears to have played a part in Guinness&am p;#39;s later c onversio n to Roman C atholicism .Father Brown tries to transport a historically important cross to Rome engaging in battles of wits and faith with a thief and pursuing 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 abandon 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.详情