When Clara vanishes after the puppeteer Grisini and two orphaned assistants were at her twelfth birthday party, suspicion of kidnapping chases the trio away from London and soon the two orphans are caught in a trap set by Grisini's ancient rival, a witch with a deadly inheritance to shed before it is too late.

In this final book in the series, the seventh graders of McQuarrie Middle School and their Star Wars-inspired Origami finger puppets go on a field trip to Washington, D.C., on what proves to be a very long trip full of shifting alliances, betrayals, carsickness, and sugar rushes.

"Shut up in a trunk by a taciturn old sea captain with a secret, five friends--a king, a wolf, a girl, a boy, and an owl--bicker, boast, and comfort one another in the dark. Individually, they dream of song and light, freedom and flight, purpose and glory, but they all agree they are part of a larger story, bound each to each by chance, bonded by the heart's mysteries. When at last their shared fate arrives, landing them on a mantel in a blue room...