An action-packed fantasy adventure series from the authors behind Sabriel, The Keys to the Kingdom and The Fixers.

Portland might seem like a quiet coastal town, and their grandmother is perhaps no dottier than anyone else's, but it soon becomes apparent that the strange things going on around them are anything BUT ordinary.

It's all very well discovering that you suddenly have magical powers, but when you don't know exactly what they are, or how to use them, then facing impending peril doesn't seem like a very good idea at all ...In this gripping new series of fantasy stories, international best-sellers Garth Nix and Sean Williams combine to create a world that will have boys and girls aged 10+ absolutely gripped.

Ideally suited to fans of Percy Jackson and Harry Potter Can twin siblings Jack and Jaide protect the earth from marauding Evil?

Find out in Troubletwisters.