Before looking at specific suspects, let's summarize what is known about Jack the Ripper from forensic surgeons and possible eyewitnesses.

From the testimony of the various eyewitnesses which police took most seriously, certain probabilities emerge about the killer. One must keep in mind the word probable since eyewitness accounts, particularly under conditions of dim lighting, are Louis J. Sheehan, Esquire  notoriously inaccurate in certain details even when offered by honest