The Ruby Airship (The Diamond Thief)

In this action-packed sequel to The Diamond Thief, trapeze-artist Remy has left the circus and her life as a jewel thief behind, but doubts that young detective Thaddeus Rec will ever truly trust her. Torn between her new life and her old, her mind is made up when Yannick, a fellow circus-performer from Remy's past, arrives in London. Remy decides it's time to go with him to France, and rejoin her best friend Claudette and the circus. But Thaddeus is sure that Yannick is up to no good. He's determined to track them down and win Remy back, even if he has to embark on a perilous journey by airship to do so.