Bracelet of bones

"One morning Solveig wakes to find her father, Viking mercenary Halfdan, has broken his promise to her by leaving to join the Viking Guard in Constantinople without her. Deciding to follow him, Solveig sets off in a tiny boat and into an epic adventure, encountering Swedish traders, a ghost-ship, and a Russian king, braving arrow-storms and witnessing a living sacrifice"--Amazon.com.