Not quite up to 21st century standards -- UPDATED

Following up on the recent post discussing British Detective Trevor Marriott's claim that he has identified Jack the Ripper as German merchant seaman Carl Feigenbaum, I re-read his book Jack the Ripper: The 21st Century Investigation.   Unfortunately, in my edition of Jack the Ripper: The 21st Century Investigation, Marriott does not identify Feigenbaum as the killer.  Marriott apparently does so in a later edition of the book, and I seem to be having trouble finding places that differentiate between the two editions.  And in any event, I was so unimpressed by the earlier edition that I am reluctant to spend the money on a rehash of the same.

Casebook: Jack the Ripper investigates Marriott's theory and pretty much levels it.  After discussing the lack of corroboration of the evidence provided by Feigenbaum's attorney, Willam Sanford Lawton, Casebook goes into Marriott's independent evidence on Feigenbaum:
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