Stuart Horten (ten, but looks younger) is now the owner of a magician's workshop - except that without his Great-Uncle's Last Will and Testament, he can't actually prove it.Which is a problem, since someone else wants it as well; someone who has a lot of money.

The workshop contains seven magnificent stage illusions, but when Stuart starts to investigate them, he discovers that each is the gateway to a magical adventure, with a puzzle to solve, and a clue to extract.

As the clues mount up, the adventures become riskier. Friendship is strained, and danger looms and Stuart has to decide what sort of prize he really, truly wants.

A second adventure for the hero of Small Change for Stuart, shortlisted for the Costa Children's Book Award and the Carnegie Medal.