On the 10th of January 1983, at HM Prison Parkhurst, Peter Sutcliffe was left blind in one eye after being attacked by another inmate, James Costello. He later became blind in his other eye too after an injection to correct blurriness caused by diabetes went wrong.
Peter Sutcliffe died of Covid-19, at University Hospital of North Durham, on Friday the 13th November 2020, about one month before the series was released.
The Slipknot song "The Chapeltown Rag" [released on the 5th of November 2021]
was inspired by this documentary.