I was terribly shocked by its score on IMDb. 7.9? Blasphemy. There are only two logical reasons for anyone to not like this show. 1. they are appalled by blood. 2. they are not willing to think.
The plot of this show requires you to use your head and give your undivided attention. But this is a strength of the show. It will completely immerse you and is totally filler free. Three times through, and not a second of this show bores me. Three story lines are expertly weaved together with pacing that reveals everything at just the right time.
The characters are amazingly fun to watch bounce of each other. Insane people are set up, and the pay-off is amazing when they meet up.
The animation makes this even better. The show is the perfect length, so the budget is spread out to where everything is fluid and all the characters expressions are captured excellently.
The music is the exact same way, and the opening is the best I've ever seen, ever.
The voice acting is superb. Funimation's best dub to date. It captures the time excellently and every actor/actress is giving there all.
It's a show near perfection. The one flaw it has is some of the confusion there might be on first watching. But in the end everything is rapped up and is fully satisfying. Which is why I would give it a 9.7. I've seen 30 anime and this is number two, only being topped by Fullmetal Alchemist Brotherhood. I've also watched many respected youtube reviewers such as GRArkada, Gigguk, and JesuOtaku. Every single one either gave the show a perfect 10 or a strong 9. It's not just for anime fans. I showed this to my 40 year old parents (never seen anime) and they loved it. Do yourself a favor, go out and buy Baccano right now. Not afraid of blood or focus? Then you will have a hell of a time.