'Sister Boniface Mysteries' Season 4 Opens with a "Biff! Pow! Zap!" BritBox's brainy puzzle-solving nun calls upon some unusual superpowers to solve a murder on a film set in the premiere episode of Sister Boniface Mysteries Season 4. By Janet Mullany filed under BritBox on 8/19/2025
'Sister Boniface Mysteries' Season 4 Will Premiere on BritBox This August The fourth season of the popular Father Brown spin-off Sister Boniface Mysteries will premiere on BritBox this August. By Lacy Baugher filed under BritBox on 8/6/2025
The 'Sister Boniface Mysteries' 2024 Christmas Special Will Go To The Birds The second Christmas Special from the hit series Sister Boniface Mysteries will return with a "Once Upon A Time" that involves turkeys. By Ani Bundel filed under BritBox on 12/11/2024
Filming Begins on 'Sister Boniface Mysteries' Season 4 Get ready to go back to Great Slaughter --- filming has officially begun on Sister Boniface Mysteries Season 4. By Lacy Baugher filed under BritBox on 7/12/2024
