I read similar with his " findings " about the real Jack the Ripper.
Even that was wrong !!
Perhaps these sort of books are aimed at those new to the case, rather than the initiated.
I would be very surprised if Harrison manages to provide anything even approaching new evidence, in Bambers case.
Were it not for the 30 year aspect, I wonder if this book would ever see the light of day.
Whatever happens, I can't help but feel that it will be an anti climax.