Father Brown season 12 continues with episode four ready to air so who are the guest stars this week? Episode four, The Invisible Friends, will debut on Friday, January 31, at 2pm on BBC One and ...

Father Brown has seen its fair share of cast changes throughout the years ... Having first appeared in the show's second season, he became a staple until leaving after the third season.

The popular series has returned with another enticing season, with Mark Williams reprising his role as Father Brown, along with other returning cast members ... in the final episode, which sees ...