A man suspected of killing a police officer is seen near Kembleford and Mallory is determined to catch him, but he has to ask the sleuthing priest for help when disaster strikes. Sergeant Goodfellow gets shots and ends up in hospital in critical condition while Mallory is injured - and it's all because of a notebook.
The bad guy is a little bit obvious especially when it's revealed that they are corrupt members in the notebook. It's a decent episode with enough things happening to be more than agreeable. Sullivan returns to the Kembleford police station to track down a fugitive when Goodfellow and Mallory are suspended from duty. And he has a more amicable pairing with Father Brown, mainly because Sullivan can't trust anyone in the police. But it's Inspector Mallory, my favourite character in the series, who is the most entertaining here, and shows a human side, and even compliments the sergeant.