Reluctantly sent to stay with her great aunt Rosina, Lucy expects this remote Cornish headland to be extremely boring, but is in for a few surprises!  While trapped within ‘The Dragon Caves’, once used by infamous Cornish Wreckers, her life is dependent upon Thomas Edgar, a boy who mysteriously appears and guides her through booby-trapped passages into ‘The Dragons Den’, where she makes a gruesome discovery. How will a relative of this find have an even greater impact on her life?