The Immortal's Legacy. The Immortal Vendetta, #2

The cities of the north are burning. In the wake of the fall of Elsevereth and Senaja, tens of thousands of refugees stream southward across the Plains of Peylan, fleeing the inexorable advance of King Fiachra's Coinneach - the brutal army of Lugan the Immortal, an ancient and seemingly unstoppable force of destruction bent on settling a centuries-old vendetta against the cities that once dared to defy him.
Galman, a young warrior thrust into a role far beyond his years, struggles to protect those who cannot protect themselves. Hektar Henriksdal, the Duke's archmage, manoeuvres in the shadows with the cool calculation of a man who knows that one wrong move could doom everything. Sven Thorson, a battle-scarred mercenary with more conscience than he would ever admit, finds unlikely bonds forming around him in the chaos of war.
And Charon, the half-elven Valkyrie and dragon rider, must confront a truth about her own bloodline that changes the meaning of everything she has fought for. Aboard Lugan's floating city of Tir Inna Noc, his prisoner Aine has watched and waited - and endured - long enough. As Peylan falls and the Free Cities ready their last defences along the Storsen River, she makes a choice that will alter the course of the war.
The Immortal's Legacy is the second book in the Immortal Vendetta series: an epic fantasy of survival, sacrifice, and the terrible cost of revenge.