You see, Moose has never met Al Capone, but a few weeks ago Moose wrote a letter to him asking him to use his influence to get his sister, Natalie, into a school she desperately needs in San Francisco. After Natalie got accepted, a note appeared in Moose’s freshly laundered shirt that said: Done.
As this book begins, Moose discovers a new note. This one says: Your turn. Is it really from Capone? What does it mean? Moose can’t risk anything that might get his dad fired. But how can he ignore Al Capone?