The WORST seasons of Sister Boniface Mysteries

Every season of Sister Boniface Mysteries ever, ranked from worst to best by thousands of votes from fans of the show. The worst seasons of Sister Boniface Mysteries!

Sister Boniface Mysteries dives into the endearing world of Great Slaughter and its secret weapon in its fight against crime, Sister Boniface. At a time when police forensics is rudimentary, Boniface's I.Q. of 156, her PHD in forensic science, plus an addiction to popular detective fiction and a fully equipped crime laboratory make her an invaluable aid to Police investigations. Mud, blood, stains, hairs and fibres. If there is evidence to be found Boniface will find it. Poisons, trace evidence, blood stains, etymology. She's more up to speed on the latest forensic techniques than the Police.

Last Updated: 10/17/2025Network: U&DramaStatus: Continuing
star
7.32
22 votes

#1 - Season 1

First Aired 3/11/2022

Say hello to Sister Boniface. This clever, moped-riding nun is the police's secret weapon for solving murders in this divine Father Brown spin-off.

star
7.40
10 votes

#2 - Season 3

First Aired 6/7/2024

In Season 3, a famous organist is murdered mid-tune in the chapel, Great Slaughter’s first sci-fi convention results in a mysterious kidnapping, and a ‘dead cert’ at the screen tests for the new ‘Agent Best’ ends up, well… dead. To top it all, Felix has a challenge of his own when his fiancée Victoria arrives from Bermuda with an ultimatum that could change everything…

star
7.81
21 votes

#3 - Season 2

First Aired 5/26/2023

Criminals, say your prayers. The Cotswolds' crime-solving, Vespa-driving nun returns in this lighthearted Father Brown spin-off. With her aptitude for detective work, Sister Boniface is Great Slaughter's secret weapon when it comes to busting countryside killers.

star
8.00
1 votes

#4 - Season 4

First Aired 9/26/2025

The nun who is the police’s secret weapon is back. Crime solving is her habit! The wine-making, moped-riding nun investigates more ugly deeds in beautiful surroundings. It’s the mid-1960s in the quaint Cotswold village of Great Slaughter, but strange things are afoot. A killer scarecrow stalks the streets, all the women call a general strike and the police embark on something called “team building”. Sister Boniface is looking forward to a wholesome weekend away with the sisters, only to be confronted with yet another murder.