"The Black Dossier"

I spent part of my weekend reading Alan Moore’s “The League of Extraordinary Gentlemen: The Black Dossier,” and boy, what a strange trip it takes readers on.It’s a book within a book, I guess you’d say. The characters of Mina Murray and Allan Quatermain retrieve “The Black Dossier,” a book with details from the hidden history of the league, and we read it as they do. So there’s some traditional comic book narrative, but also a lot of prose pieces and special features. Warning: for mature readers, as they say, with some “adult” drawings by Kevin O’Neill.