MOOSE FLANAGAN is back -- and now he owes AL CAPONE a favor!
When twelve-year-old Moose Flanagan finds a note in one of his freshly laundered pillowcases, he knows exactly who it's from: Al Capone. Capone may be one of the most notorious criminals in residence at Alcatraz, but he and Moose have a special connection. And now, it seems, Al Capone wants Moose to do something for him.
As Moose and his friends work together to figure out how they're going to get away with helping one of America's most notorious gangsters, some of Alcatraz's other inhabitants are trying to get away with something of their own. . . .