Frostborn

Ridmark Arban is the Gray Knight, and he quests for the ruined citadel of Urd Morlemoch, seeking a way to stop the return of the dreaded Frostborn.
For if he does not find a way to stop them, the Frostborn shall entomb the world in ice forever.
Morigna is the cunninng Witch of the Hills, feared and mistrusted by the townsmen of Moraime. Yet darker things stir in the hills.
A trap that might devour both her and the Gray Knight . . .