The Hour of Death: A Sister Agatha and Father Selwyn Mystery by Jane Willan

Finding Tiffany dead was a shock.  They call it a natural death thinking it was a heart attack but Sister Agatha doesn't agree.  She thinks a toxicology test should be done.  But no one is listening to her.

Crooked Lane Books and Net Galley let me read this book for review (thank you).  It will be published October 19th.

Sister Agatha does some snooping to see if she can find suspects.  There's no problem with that.  She's passing off beautiful paintings of birds as hers when another woman has painted them.  Everybody who saw her dead just stepped over her to get what they wanted.  She didn't get any sympathy from anyone.

Sister knows she must be getting close because she got a threatening note and someone ran her off the road, totaling their van.  None of the sisters were hurt but they could have been.  This is getting serious now.

It comes to standoff between the murderer and Sister.  He has a gun.  

You'll have to read the book to see who won the standoff.