Jack the Ripper still causes a shudder, synonymous as it is with violent murder and mutilation. But also of mystery and speculation - for the gruesome series of killings in London's East End in that horrific Autumn of 1888 have never been finally solved.The identity of the Ripper, his motives and his association have been the subject of endless discussion and speculation since Victorian times. Suspects have been as varied as a Jewish slaughter man...