The charismatic crime-fighting priest returns to solve more mysteries in the beautiful English countryside. Based on the character created by GK Chesterton, the year is now 1954 and the sleepy Cotswold village of Kembleford sees new faces join Father Brown's team of sleuths. The dashing Chief Inspector Sullivan (Tom Chambers) is back and proves a pleasant distraction for Mrs. Devine (Claudie Blakley), Father Brown's lively new Parish Secretary, while plucky new housekeeper Brenda (Ruby-May Martinwood) helps the priest's crime solving. With royal visits, kidnappings and notorious gangsters to contend with, Father Brown (Mark Williams) also faces his old adversary Flambeau (John Light) who returns to Kembleford after being accused of murder. Father Brown risks his own life to prove his innocence - but is his faith in Flambeau misplaced?