One day Arthur Conan Doyle will create the greatest detective of all – Sherlock Holmes. But right now Artie Conan Doyle is a twelve-year-old Edinburgh schoolboy with a mystery of his own to solve.

Artie and his friend Ham are hired to investigate a series of suspicious accidents that have befallen world-famous magician, the Great Wizard of the North. It seems someone is determined to sabotage his spectacular new illusion.

When the huge mechanical dragon created for the show vanishes, the theft appears to be completely impossible. Artie must reveal the trick and unmask the villain or face the deadly consequences. The cards have been dealt, the spell has been cast, and the game is afoot once more!