The Weirdstone of Brisingamen

When Colin and Susan are pursued by eerie creatures across Alderly Edge, they are saved by the Wizard. He takes them to the caves of Fundindelve where he watches over their enchanted sleep of one hundred and forty knights.
But the heart of the magic that binds them – Firefrost, also known as the Weirdstone of Brisingamen – has been lost. The Wizard has been searching for the stone for more than 100 years, but the forces of evil are closing in, determined to posses and destroy its special powers.
Colin and Susan realise at last that they are the key to the Weirdstone’s return. But how can two children defeat the Morrigan and her deadly brood?
Ages 10+