"Part one of two. Documentary re-creating the original police investigation to catch the famous killer, using CGI and live action to replicate the murder scenes. Two of the world's leading Ripper experts examine the original press reports and inquest testimonies revealing the possible identity of the culprit and a motive for the crimes. Part two can be seen on January 20"
i have studied this a lot, and more often i think researchers, authors whatever, start out by deciding who it is and then making the evidence work. patricia cornwells crap book was a prime example.