I didn't think this was as good as the first entry, but it was still very fun. I think its strongest point is probably how the animation is as awesome as ever. It's funny, because when he mentioned an English criminal ghost, I thought he was going to say Jack The Ripper. When he didn't and then he did, boy was I amazed. I loved the running gag of the explosion. That ending seemed to come out of nowhere, too.
I think it's interesting to introduce rivals to the main characters. I just loved the transition effects in this, especially with how the book moved. The animation kind of reminds me of "Adventure Time". Geez, I need to start watching that show. It's just fun from beginning to end.