Michelle Paver's Chronicles of Ancient Darkness Collection 6 Books (Spirit Walker, Wolf Brother, Outcast, Soul Eater, Ghost Hunter, Oath Breaker)
And Torak's quest is far from over. A strange, creeping sickness, silent and deadly, is threatening the Ravens. Word arrives that the Seal Clan have the cure and Torak must face a lonely journey to find it. On the Seal's Island he stumbles into a world utterly unlike his own. Here life moves to the rhythms of the sea, the Seals build shelters from whale bones and skim the waves in fast, beautiful kayaks. And here Torak is welcomed by the kindly Seal Mage, Teneris, and kinsman, Bale. But all is not as it seems - Torak must keep his wits about him to judge who might be friend or foe.