The (presumabely) goddess shown at the end of chapter 75 had crows. She likely led them there. Also the killer likely just hid the body in that cave, since it might be a holy place no one goes into (or its an unkown cave. Idk i didnt pay much attention to the mythos)I mean, the doctor long being dead wasn't exactly surprising.
To find his corpse (or rather the remains) neatly stored away like that though...
Nevermind a crow picking a key out of someone's wrist and cleanly guiding them there.
A fictional story's fictional for a reason but I preferred the rather realistic way things went before.
Then again, the occult has been mentioned before and reincarnation isn't exactly commonplace either so maybe someone felt the need to add a supernatural label...
I agree that the sudden supernatural stuff is a bit contrived but it was always a story about reincarnation I suppose. I wonder how far they'll go with it though