Probably all the Ripper books are "just that," barring the compendiums which collect suspects but do not identify a candidate. Again, I do not think it would take much to subdue these women, many of whom were drunk. Stephenson was only 47 during the Ripper panic. Stephenson, among many other things, tried to inject himself into the investigation and thus to get closer to it, as have guilty parties in other cases. He was deeply misogynistic, with a hatred of prostitutes. He was in London's East End at the time. At the very least, he is a serious candidate---much more so than Druitt, Sickert, "the Royal family," et al.