In Season 2, Episode 4 (originally aired April 6, 2017), the long-standing blood feud between the sons of Ragnar and the usurper Kjartan finally reaches its brutal conclusion. The episode follows Uhtred as he balances his oath to King Alfred with his personal quest for vengeance. Key Plot Developments
: Uhtred exploits a secret water gate to breach the fortress of Dunholm while Ragnar leads a frontal assault.
: While the battle rages, the long-imprisoned Thyra takes her own revenge by setting her hounds upon her captor, Sven One-Eyed, who is mauled to death.