What's everyone's theory on him?
Last place he was officially seen was in William Henry Street right here in Liverpool.
He also is supposed to have jumped from the reservoir on High Park Street, L8.
Peter Haining, in his book 'The Legend and Bizarre Crimes of Spring Heeled Jack' claims Jack is the Marquis of Waterford (i think!)
I don't agree though, that is all too simple for me!