"Thirteen-year-old Lily Hartman always dreamed of adventure. A strong-willed girl, Lily felt trapped in a life of Victorian stuffiness at her prim boarding school. But after her father--a famous inventor--disappears on a routine zeppelin flight, Lily's life gets turned upside down. Now cared for by her guardian, the heartless Madame Verdigris, Lily is quite certain that she's being watched. Mysterious, silver-eyed men are lurking in the shadows, just...

When a traveling skycircus arrives in town, Lily and Robert can't wait to step aboard. But something sinister lurks there. And before Lily and Robert can do anything, they're captured and whisked off in the mysterious flying circus to somewhere far, far away...