Chronicles of Ancient Darkness

Torak circled the fire and Thiazzi came after him: slowly, cracking his whip, playing with his prey as a lynx plays with a lemming. Torak was exhausted. He wasn't going to last much longer. When he was outcast, Torak was the hunted one. Nine moons later he becomes the hunter, when he vows to avenge the killing of one of his closest friends.

It's winter, and Wolf, Torak's beloved pack-brother, has been captured by an unknown foe. In a desperate bid to rescue him, Torak and Renn must brave the frozen wilderness of the Far North.