I enjoyed Thou Shalt Not Kill (Sister Agnes Mysteries Book 1) by Alison Joseph. 📚
It strikes me that this series would probably work well on Acorn TV.
Sister Agnes Bourdillon … belongs to an open Order in gritty Central London. … [but she] feels torn between her instincts and her faith. Obedience to her Order is what she signed up for. But it doesn’t come easy. Especially when there’s a twisty mystery to be solved.