Arthur Penhaligon has a broken leg and a bad attack of asthma, but there's no time for recovery. From hospital room to the high seas, Arthur must battle pirates, storms, monsters made of Nothing and a vast beast that can't stop eating. Arthur struggles to unravel the mystery of the Architect's disappearance, and the plotting of the Trustees.

But first... can Arthur trust the Raised Rats? Where are Leaf and Suzy?

The Keys to the Kingdom series has received widespread recognition winning 2 industry awards, shortlisted for Aurealis Awards and twice commended for the CBC Awards.