"Mercenary" is the first episode of the third season of Vikings. It is the twentieth episode of the series overall. It first aired on February 19, 2015. It was written by creator Michael Hirst and directed by Ken Girotti.


Ragnar and Lagertha's fleets depart Kattegat once more for Wessex but this time they bring settlers. King Ecbert hosts the Vikings and proposes a deal. Despite the misgivings of some of the other leaders, Ragnar leads his forces into battle once more, but this time as allies of Wessex.


Ragnar tells Björn that he never wanted to be king, that he wanted only to explore and farm. Ragnar wants to return to Wessex to claim the land he was promised by King Ecbert. Floki feels that his new family with Helga is too happy, while Rollo wishes to be away from Siggy. Þórunn desires to be like Lagertha, much to Björn's displeasure; he believes her to be carrying his child. When Lagertha announces she intends to raid with Ragnar, Kalf, her right-hand man, offers to remain and take care of Hedeby. When the northmen arrive in Wessex, King Ecbert informs Ragnar that to receive their promised land, the Vikings must fight for Princess Kwenthrith to appease King Ecbert's nobles. Lagertha is unsure about joining, so King Ecbert offers her the job of leading the Viking settlers in Wessex. The warriors proceed to Mercia and the settlers to the land to farm, while the Viking warriors defeat Kwenthrith's uncle's army.



Guest Starring

Additional Cast (in order of appearance)

  • Steve Wall as Einar
  • Cathál Ó'Hallin as Hvitserk
  • Cormac Melia as Ubbe
  • Philip O'Sullivan as Bishop Edmund
  • Ian Beattie as King Brihtwulf
  • Aaron Monaghan as Prince Burgred
  • Lochlann Ó Mearáin as First Noble
  • Conor Ryan as Second Noble


Episode Deaths