THE Jack the Ripper ‘industry’ got a boost on the 120th anniversary of his first acknowledged murder. The great-grandson of the police chief in charge of the 1888 Whitechapel Murders arrived at the Ripper exhibition at the Museum in Docklands in East London—just before the 120th anniversary of the murder Mary Ann Nichols, a prostitute known as ‘Polly,’ believed by many to be his first victim. He arrived with evidence from his Victorian ancestor revealing the Ripper’s true identity. Jack the Ripper was never caught and his identity has remained a mystery for 120 years, feeding a whole ‘industry’ that...