Father Brown is asked to look after Lady Felicia’s wayward niece Bunty, who soon finds herself suspected of murder.

A letter from Peter Townsend spurs Margaret to make a bold proposal. Elizabeth has good news that causes complications for Margaret.

When Elizabeth and Philip throw a grand party for their 10th anniversary, both Margaret and the new Prime Minister experience romantic tribulations.

When a highly skilled trio of Chinese agents arrive in London for 48 hours only, the team must find out why they are here. Ruth goes undercover in a major…