The story of Jack the Ripper (and all the conspiracy and speculation surrounding it) is fascinating. I read the appendix along with the graphic novel itself (I'd read a few pages, then flip to the back). It was not a very effecient way to read, but the clarification of what was pure fiction, what was commonly acknowledged fact, and what was rumor based on rumor based on a snippet of truth, was almost more interesting than the main story itself. Of course the latter couldn't exist without the former.
