Sword Song is the fourth book in the series. Season 2 of the epic TV series premiers this March. It is 885. England is at peace; the Danes rule the north and King Alfred holds the south. But trouble stirs when a band of Vikings invade London. Uhtred of Bebbanburg, Alfred's greatest warrior, must lead his men to attack the Viking raiders in the south. But his allegiance to the King will be tested in perhaps the most threatening way yet.