[But Also Mysteries In General] I'm cautiously putting together some Golden Age mysteries I want to read since I want to give mystery-writing a crack of my own at some point, and I get the feeling as I construct it that I'm going to have a deeply weird experience.
(So far, I'm perusing Carr's catalogue for works I find intriguing in the premise of. Marking down The Hollow Man and Nine Wrong Answers as things that could be my jam and then moving on to other authors after that.)
(And Then There Were None is an obvious must, I kinda want to read a few choice Doyle stories for history's sake and also to see where the most "pure logic puzzle" stuff comes from.)
Flex those muscles a little bit and learn more about the actual foundational stuff instead of diving into the deep end with just my knowledge of stuff that was made as a response to mysteries, typically.
if you can handle Christianity as a big thing, the Brother Cadfael series by Ellis Peters is a series of murder mysteries that take place in a monastery after one of the Crusades, the main character is a monk who was a former soldier who uses his knowledge of people dying as a soldier to solve murder mysteries
- Murder on the Orient Express, although that one might be too famous
- The ABC Murders
- Death on the Nile
- basically any of it