Glastonbury, AD 1190 and Hereward is in grave danger. He's found a sword that has extraordinary power and there's no way he's letting anyone near it - not even Gwyneth. There are prisoners on the run, traitors roaming around the local woods, and talk of treason is running rife. The very throne of England is threatened and it may be that Hereward holds the key to all. Ursus and Gwyneth must make Hereward see that the treasured sword has to be returned to its burial place, until the time is right for it to be found again...