Following an attack on her family fifteen-year-old Thora is enslaved by a brutish Viking chieftain Bjorn Svanson. A healer & a midwife Thora is valuable. She also has visions of the future.. .and in one she foresees Svansons death. When her prediction becomes reality Thora recognizes that another of Svansons slaves is a man she has seen before-a man from recurrent visions who is destined to be part of her future. Assuming Svansons identity the slave & Thora use the dead mans ships to escape. Their destination is Iceland the then uncharted land of fire & ice. To succeed they must first win over Svansons crew & their journey is fraught with hardship & danger. But their troubles are only just beginning. Soon newcomers are among them & someone is stealing from Thoras medicines to cause terrible harm. Under suspicion herself can Thora unmask the real culprit & clear her name? & can Thora & the man now known as Bjorn ever really hope that their pasts wont catch up with them?