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Ragnar agrees to King Horik's request that he not execute Jarl Borg until they find a new ally. Floki learns from Helga he is to become a father and he suggests that they marry. He refuses to invite Ragnar however and his ill will towards his Earl becomes obvious. Aslaug is worried about her current pregnancy. The seer tells Ragnar that Athelstan is still alive. Ragnar receives word of a possible new ally but Rollo is suspicious, not having heard of this particular Earl. Ragnar is in for a surprise in store. King Aelle of Northumbria arrives in Wessex and King Ecbert proposes a marriage between his eldest son, Ethelwolf and Aelle's daughter Judith.
- Writers: Michael Hirst
- Stars: Alexander Ludwig , Alyssa Sutherland , Cathal O'Hallin , Clive Standen , Cormac Melia , Donal Logue , Edvin Endre , Gaia Weiss , George Blagden , Gustaf Skarsgård , Jefferson Hall , Jessalyn Gilsig , John Kavanagh , Katheryn Winnick , Linus Roache , Maude Hirst , Moe Dunford , Travis Fimmel