The ruby airship

Rémy Brunel, acrobat and former jewel thief, stayed behind in London when the circus left, but she is starting to feel lonely, so when magician Yannick, an old friend, turns up she decides to return to France and the circus with him--but detective Thaddeus Rec believes Yannick is up to no good, and determines to pursue them in an airship to win her back.