Moose is steadfast in his loyalty to his friends and to his sister. It is interesting to see Natalie as she becomes a young woman, and alarming to see how she is mistreated by someone who knows her, even if this is an all too common occurrence. Moose is even loyal to Piper, who is still a challenging individual.
The information about the historic site of Alzatraz at the end of the book was very interesting, and gave a lot of good details about many aspect of life during this time at this location. Choldenko has done a lot of research throughout this series, and it's great that she shares it with her readers. I just wish I were close enough to go on a field trip to Alcatraz!
I'd love to see more books set during the 1930s, since that decade before World War II has many similarities to modern culture, but also so many differences. Readers who are fond of delving into this era with books such as Milton Meltzer's semiautobiograpical Tough Times, Richard Peck's A Long Way From Chicago novels, Curtis' The Mighty Miss Malone and Holm's Turtle in Paradise books will enjoy this vivid tale of life during this era surrounded by some of its most daring and infamous criminals.