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- 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 ,
Ragnar, his family and others travel to Uppsala to pay homage to the gods. It's a trip they make every nine years and he invites Athelstan to accompany them. Ragnar is still having difficulty accepting the loss of their baby and Lagertha worries if she will ever bear him another son. The drug, sex and alcohol-fueled festivities are a revelation to Athelstan who learns that there will also be animal and human sacrifice. He renounces his Christian faith but a priest tells him he is to be a sacrificed. He is spared but Ragnar's group must provide a substitute. King Horik welcomes Ragnar who pledges his fealty and his service. In return, he asks Horik to join forces with him so they can send bigger raiding parties to the west. Horik agrees but has a task for him.