The charming Father Brown (Mark Williams) returns to solve more mysteries in the sleepy Cotswold village of Kembleford. Father Brown finds himself trapped with a murderer during a dark, stormy night. A civilised fundraiser at a finishing school puts Mrs McCarthy (Sorcha Cusack) in the path of a rogue bullet. Inspector Mallory (Jack Deam) begrudgingly accepts a partnership with Father Brown when they are summoned to the site of a past murder. And a daring train robbery sees Lady Felicia (Nancy Carroll) and Mrs McCarthy carried off in the dead of night. Can Father Brown find them before it's too late?