Pinocchio meets The Wizard of Oz as a boy and his mechanical friends discover the truth about his past in this magical bestseller ... 'One of a kind. Utterly fantastic.' EOIN COLFERChristopher is 'Proper': a real boy with a real soul, orphaned in a fire.

He works for an engineer, a maker of the eccentric, loyal and totally individual mechanicals who are Christopher's best friends.

But after a devastating accident, a secret is revealed and Christopher's world is changed for ever. What follows is a remarkable adventure, as Christopher discovers who he really is, and what it means to be human ...