Mark and Nantosueta arrive into a violently dystopic London, searching for Padraig, and the Sword of Feimhin.  In a ramshackle squat, Penny Postlethwaite, a gifted but emotionally troubled teenager, is mapping two Londons, the tormented “City Above” and an eerie and frightening “City Below”.  On Tír, Alan leads an invading army of Shee, aiming to attack Ghork Mega, the Tyrant’s capital city.  At every turn he encounters obstacles of malevolent cunning that obstruct his path.  In Dromenon Kate enters the Land of the Dead, as she explores the leviathan roots of the One Tree, risking all to locate the serpent-dragon Nidhoggr, whose very soul is chaos, to save the Cill.