There was a TV show I watched in a hospital recovery room while recovering from surgery back in May of 2022. I have no idea when the TV show came out, likely was a rerun.
NSFW due to murder of course.
I missed about half of it, but the half I did watch featured a British man who was tasked in solving the mystery of who was murdering various people in a community. The person would leave clues in the crime scene. I remember one scene featured mannequins dressed up like the victim, in the woods on a stage platform?
Near the end one of the last scenes showed the detective stumbling upon the murderer preparing to light on fire her final victims. They were wrapped in rope around a chair, and the murderer, a woman, was dousing the place with flammable liquid. It was inside a garage or shed or something. The man sees this situation and talks the women into dropping matches and coming clean to police, saving the person who was tied up.
It was a really interesting show but I cannot for the life of me find it on google.