Overview:

Troll Blood (Troll Trilogy #3) : Peer and Hilde are thirsty for adventure, and when a Viking longship arrives in their village looking for crew, they decide to set sail and discover the world. The Water Snake is heading for Vinland, a place far across the sea inhabited by the Skraelings - a mysterious race of people with dark skin, long black hair and brightly painted faces. But are the ship's captain and his sword-wielding son really honest traders? What other creatures prowl around Vinland's dark forests? And will Peer and Hilde ever return...