The ceasefire is barely holding. Southside waits, with a kind of hope that feels like defeat. Then Cityside blows up the bridge; amid the chaos and rubble, Nik and Lanya are drawn into a complex web of power, fear and betrayal. Who is the girl found crying by the bridge, and what is her connection to the mysterious experiments taking place at Pitkerrin Marsh? And why does she cry 'havoc'? Before he can find out, Nik must first find his father - and face the toughest decision of his life....