Kembleford is rocked when a group of leather jacket wearing bikers arrive in town. Local girl Lisa Morris is taken with head of the gang Billy Turner, her mother isn't quite so smitten.
There is something satisfying about the idea of Kembleford's quiet serenity being rattled by a group of trouble making and speed loving bikers.
The biking accident, that's actually one of the nastiest killing methods ever on Father Brown, it was a particularly grim way to go.
Maybe not the most satisfying mystery of all, the killer's identity wasn't perhaps the biggest surprise, but the visuals and flavour of the era was perfectly captured.
Lisa's transformation, that was quite extreme, Grease vibes about it.
All credit to Jamie Bacon, cracking performance as Billy Turner, he certainly looked the part, and acted it.
7/10.