Obviously, if you're checking out reviews of this book, you're already interested in Jacques Tardi's work. And his artwork here is great (GREAT!), even more so if you're into steampunk. But as great as the artwork is, the story end doesn't quite hold up. It is a twist on an adventure story, and I did enjoy that. However, the story ends abruptly, and the whole thing feels unfinished. Beyond that, the story is broken up into a series of very short segments that can be dialogue-heavy at times, and doesn't flow as well as it could.
Bottom line: if you're trying to find a Tardi book to start with, go with "West Coast Blues" or "It Was the War of the Trenches," both of which have very good stories and artwork. I'd feel pretty badly if this was a reader's introduction to Jacques Tardi's work, though, because even though it has good qualities, it's not as well-rounded of an album as the other two books I mentioned.