Prince Liam. Prince Frederic. Prince Duncan. Prince Gustav. You think you know those guys pretty well by now, don't you? Well, think again. Posters plastered across the thirteen kingdoms are saying that Briar Rose has been murdered, and the four Princes Charming are the prime suspects. Now they're on the run in a desperate attempt to clear their names. Along the way, however, they discover that Briar's murder is just one part of a nefarious plot to...

"The thrilling conclusion to Christopher Healy's funny, action-packed, acclaimed alt-history adventure! It is 1884, and Molly and Cassandra Pepper, Emmett Lee, and Emmett's long-lost father are sailing back to New York following their death-defying adventure in Antarctica. Having discovered a subterranean world at the South Pole while saving the world from certain doom once again, surely their accomplishments will finally earn them the recognition...

In 1883 New York, while trying to introduce her mother's flying machine to the men-only Inventors' Guild, twelve-year-old Molly uncovers a plot to destroy the World's Fair.