The Manchester Canal Pusher, who killed his victims by pushing them into the canal where they drowned. Tended to target students clubbing on weekends. He was never identified. Then one day they installed railings along the canal and his killing spree stopped
I was just thinking today, what's the most "solved" unsolved mystery?
I think my favorite is Amy Bradley. She disappeared after going out drinking until 4 AM on a cruise ship and was last seen sitting on a balcony drunk off her ass and every youtube video on the subject thinks it's more likely she was kidnapped by white slavers and sex trafficked to a brothel in Curacao than that she drunkenly fell off a boat