Al Capone Does My Shirts question

I haven't read the book yet, but the local children's theater put on a performance of it last year and I really liked it. I grew up in a Chicago suburb, so I had heard stories of Al Capone, but never really thought of the influence he may have had even after he was imprisoned. I even have a story floating in my family that when my grandfather and his brother were young, they worked as house painters/wall paperers and that they once worked in Al's brother's house.

It's a good book, but it really has nothing to do with Capone, per se. Yeah, he is a prisoner there, but it's more about life on Alcatraz for the guards and their families than it is about Capone. All my students pick it up, thinking it's a "gangster" book, but then they're disappointed when it's about a boy and his mentally handicapped sister....

I really liked this book a lot. Is there a third one?