Intrigue! Subterfuge! Circus Folk! The second novel based on the multiple Hugo Award-winning webcomic! In a time when the Industrial Revolution has escalated into all-out warfare, mad science rules the world... with mixed success. Agatha has escaped from the massive airship known as Castle Wulfenbach. After crashing their escape dirigible, Agatha falls in with Master Payne's Circus of Adventure, a traveling troupe of performers dedicated to staging Heterodyne shows - dramatizations of the exploits of Bill and Barry Heterodyne and their allies - who are unaware of Agatha's connection to the Heterodyne line.