The Lethal Oath
by John Snow
The Lethal Oath is the second book in The Viking Series. In the novel, Sigve from Vik enters into a hot erotic relationship with Yljali. She is a mysterious thrall girl and the only person who knows the secret of Sigve's sword. When Sigve gets involved in the war between two mighty kings, he soon has to fight for Yljali, for his people at Vik, and for his own survival.