Unlike typical whodunits, the episode delves into Father Brown’s desire to "save the soul" of his adversary rather than just catching a criminal.
When Bishop Talbot warns of a threat against a priceless sapphire-studded cross, Father Brown decides to personally transport the relic by train to Newbury Abbey. This decision puts him at odds with Inspector Valentine, who views the move as reckless. On the train, Father Brown encounter a trio of suspicious passengers, including the disabled Mr. Dawson and Captain Flynn, as he attempts to smoke out the notorious thief Flambeau. Review & Reception Father Brown 1x10
The introduction of Flambeau (played by John Light) is the episode's greatest success. The verbal sparring between him and Father Brown reveals a mutual, albeit begrudging, respect. Unlike typical whodunits, the episode delves into Father
“A nice little mystery and fitting end to a good first series.” IMDb "Father Brown" The Blue Cross (TV Episode 2013) - IMDb On the train, Father Brown encounter a trio