Bloodtide is a youth-fiction novel by Melvin Burgess, first published by Andersen Press Limited in 1999. It is based upon the first part of the Icelandic "Volsunga Saga". It received positive reviews from The Guardian, Kirkus Reviews, and Publishers Weekly, and was followed in 2007 by a sequel, Bloodsong.
This is the first in the series of two novels based in this universe. The book deals with two warring gangs, named the Volsons and the Connors. Each controls a large portion of London, since the city was blockaded from the outside world. Val, head of the Volsons, wishes for peace between the two and offers his daughter Signy as Conor's wife in order to broker a treaty. His hopes are to unite London and destroy the half-men who occupy the outer rim of London. Once they have been destroyed, he wishes to rise up against the rest of the world and claim it all in the name of the Volson clan. Standing between these dreams are humans, half-men and even the almighty Gods themselves, who have recently begun to reappear throughout the world. The book is difficult to categorize, with much of it dealing with sci-fi, fantasy, philosophical and even religious elements.
This story takes place in the future, where London is a where two clans war. The two main characters of this story are twins Siggy and Signy. They are the children of Val Volson, leader of the largest territory that was once London. Val wishes for peace and believes the only way to do so is to unite London under one ruler. He offers his daughter Signy as Conor's wife, in order to show his complete commitment to the Treaty. Conor agrees and shows his trust, by visiting the Volson's territory. The visit goes as planned until a banquet is interrupted by an unusual guest. A believed spy, who was strung up by his ankle returns to life and shows it was not a one time trick, as he crashes down head first from thirty or so feet up. After returning to life for the second time he walks up and down the hall. He acknowledges only Siggy and Signy, before plunging a knife deep into a believed to be unbreakable substance. All others try, but no matter how hard they pull, the knife remains within the wall. But one person knows he is the chosen one. Siggy (who wishes for anything but the responsibility of leadership) removes the knife with ease, as his father acknowledges that it was a gift from Odin himself, blessing the treaty in his own way. Conor wishes to have the knife himself and asks Siggy, claiming that as the guest of honour he is entitled. But Siggy refuses, even going so far as to plunge it into wood. But Conor cannot remove it and laughs it off, before leaving with Signy. Signy is disappointed with Siggy for not giving the knife to Conor and heads to Conor's territory annoyed at her brother.