I read Jeremy Biltz's DVD review of The Real Wolfman at http://www.dvdtalk.com/reviews/read.php?ID=44051 and...while I confess to not having seen this yet, I can't help but be astounded by the shows investigators ability to make deductions about incidents that occurred long before forensics, finger printing, or any modern investigative techniques were even dreamed of; coupled with the fact that everyone involved is long gone. Like any of these fascinating yet unsolvable mysteries of the past, there is no true modern way to reach anything but an educated guess as to what really happened.

That was one of the weaknesses of the show. They were a bit too sure of themselves and their theories. A lot of the conspiracy theory craziness was left out, though. And they did look at a lot of primary sources. But, yeah. At this point, one guess is as good as another.