Blood of the Bear: An epic Viking tale of valour and comradeship (Fire Born #5)
Angus Donald

Duke Widukind, leader of the Saxon rebels, is sheltering in the North, beyond Karolus’s reach. He hopes to persuade Bjarki Bloodhand – once a famous berserker, but now a father and family man – and his fierce sister the shield-maiden Tor, to join his revolt against tyranny.
But Bjarki has eloped with Widukind’s sister Edith, who was betrothed to Abbio the Crow. In revenge, Abbio uses seithr to strike at Bjarki – a powerful spell to drive him insane. Can Bjarki resist the long slide into madness? And will Widukind finally liberate Saxony from the Franks?
A Viking epic of rebellion and revenge, perfect for fans of Matthew Harffy and Giles Kristian.