When dismembered bodies started showing up in the Kingsbury Run area of Cleveland in the 1930s the police brought in the man responsible for taking down Al Capone, but not even he could solve this mysterious case. 

https://www.clevelandpolicemuseum.org/collections/torso-murders/

https://medium.com/crimebeat/the-cleveland-torso-killer-the-man-who-destroyed-a-legend-c93260affb1a

https://unresolved.me/the-cleveland-torso-murders

https://allthatsinteresting.com/cleveland-torso-murderer