Sophronia s first year at school has certainly been rousing. First, her finishing school is training her to be a spy (Won t Mumsy be surprised!). Secondly, she gets mixed up in an intrigue over a stolen device and has a cheese pie thrown at her. Now, as Sophronia sneaks around the dirigible school, eavesdropping on the teachers quarters and making clandestine climbs to the ship s boiler room, she learns that there may be more to a school trip to London than at first appears . . .

Vampires, werewolves and humans are all after the prototype Sophronia recovered in Etiquette & Espionage, which has the potential to alter human and supernatural travel. Sophronia must try to uncover who is behind a dangerous plot to control the prototype . . . as well as survive the London season with a full dance card.