As close to perfect as an adventure novel can be. Filled with fascinating characters and containing some of the best derring ever to have been done in all of literature. It’s more a series of events rather than a novel (it was originally serialised so that would explain that) but everything ties together by the climax and then it ends rather suddenly - as all the best adventures do - capped off with a “where are they now” epilogue that gets ignored once Dumas realises just how profitable a couple of sequels would be. Glorious fun.