The silver sea / Golding, Julia

Freydis joins her father, a Viking leader, on a quest to find her brother who had been taken prisoner after a raid by marauders. Freydis draws close to her slave and protector Enno, but they find that friendship, family, and loyalty are tested to the limit when the battle begins.

When pirates raid a village in ninth-century Norway, eighteen-year-old Toki is captured as a prize, while Freydis, his younger sister, is taken to a friendly village where she and her African slave, Enno, learn that their fates are linked by prophecy.