The Riddle Walker — Alydia Rackham

Sequel to The Beowulf Seeker... Bhaird noticed a stark difference in his younger brother Oleron after the battle with the Danes. But he soon forgets that puzzle when their father is killed in a hunting accident, and the three MacDonald brothers are divided to rule their inheritances. Oleron and Dunmor are given pieces of Scotland--and Bhaird must go to Ireland. But as Bhaird and Oleron sail out toward that foreign land, the sea churns and takes their ships under... And when they surface, the brothers find themselves in the far future. In the midst of the second World War. But because a small action in the medieval past... The Allied Forces may not win after all.