Drugged and plagued by hallucinations of Ivar, Hvitserk killed shieldmaiden and fan favourite Lagertha (Katheryn Winnick) after mistaking her for a serpent, a representation of his rival.
However, some viewers were baffled when the pair shared a rather heartfelt reunion in the penultimate chapter of the first half of season six.
In episode nine, Resurrection, Hvitserk confessed to Lagertha’s murder, later joining Ivar to storm the beach of Vetfold and overthrow Bjorn Ironside (Alexander Ludwig).
Throughout the lengthy wait for the midseason premiere, fans have been debating the brothers’ inconsistent relationship over the last few years.