After the King of Ayr died without naming an heir, a century of enmity destroyed the one kingdom, as the mighty families of the Renn and the Wills fought to determine the crown in a bitter storm of treachery and blood. But now the decades of hatred have woken the unquiet river spirits from their timeless sleep, andrevived a feud more deadly than any conflict of man. As alliances shift and loyalties are tested in the harsh civil war between the two...