Vikings Wiki

Season 4 of Vikings premiered on February 18, 2016 on History in Canada and in the United States and concluded on February 1, 2017. This season, consisting of 20 episodes, was split into two ten-episode parts with the first part airing from February 18 to April 21, 2016, and the second part airing from November 30, 2016 to February 1, 2017. Below is brief review of what happened in the fourth season of Vikings.


Part I

Season 3 culminated with the extraordinary battle in Paris, where Ragnar seized victory from the jaws of defeat – but still returns to Kattegat dangerously ill. Thoughts of his death galvanize the forces who seek to succeed him as king, including his wife Queen Aslaug and his oldest son, Bjorn. Meanwhile, Lagertha continues power struggles with her calculating, former second-in-command, Kalf. Rollo betrays his Viking heritage by remaining in Frankia; and Floki is seized for his brutal actions to the Christian priest Athelstan.

Part II

In the midseason premiere, Ragnar’s reappearance in Kattegat triggers a chain of events no one – except the Seer – could have ever imagined. He unexpectedly arrives home to see what has become of his sons.


Main Cast

Recurring Cast



Executive Producers

  • Morgan O'Sullivan
  • Sheila Hockin
  • Sherry Marsh
  • Alan Gasmer
  • James Flynn
  • John Weber
  • Michael Hirst


  • Keith Thompson: Episodes 1, 2, 3, 4, 5, 6, 7, 8, 17, 18, 19, and 20
  • Sanne Wohlenberg: Episodes: 9, 10, 11, 12, 13, 14, 15, and 16
  • Bill Goddard: Co-producer
  • Séamus McInerney: Co-producer

Production Team

  • P.J. Dillon: Cinematographer (Episodes 1, 2, 3, 4, 5, 6, 7, 8, 17, 18, 19, and 20)
  • Owen McPolin: Cinematographer (Episodes 9, 10, 11, 12, 13, 14, 15, and 16)
  • Mark Geraghty: Production Designer
  • Aaron Marshall: Film Editor (Episodes 1, 4, 7, 15, and 18)
  • Christopher Donaldson: Film Editor (Episodes 2, 5, and 8)
  • Tad Seaborn: Film Editor (Episodes 3, 6, 9, 11, 13, 16, and 19)
  • Don Cassidy: Film Editor (Episodes 10, 12, 14, 17, and 20)
  • Trevor Morris: Composer
  • Franklin Henson: Stunt Action Design
  • Richard Ryan: Stunt Action Design
  • Dominic Remane: Visual Effects Supervisor
  • Joan Bergin: Costume Designer
  • Frank Moiselle: Casting Director
  • Nuala Moiselle: Casting Director
  • Lucy van Lonkhuyzen: Assistant Set Director
  • Justin Pollard: Historical Consultant
  • Irene O'Brien: Art Director
  • Ida Eriksson: Hair Stylist


Episode Guide

See also: Episodes
Episode Image Title Airdate
Volume 1
4.01 30 A Good Treason Promo A Good Treason February 18, 2016
As Ragnar lies in his sick bed in Kattegat, events unfold beyond his control; Bjorn orders the arrest of Floki for Athelstan's murder; Rollo betrays his Viking supporters to strengthen his position; Kalf announces joint Earldom with Lagertha.
4.02 31 Season4Episode2 Kill the Queen February 25, 2016
Ragnar and Floki are still at odds; Rollo makes great attempts to win over his new bride, Princess Gisla; Bjorn's survival skills are put to the test; King Ecbert sets the task for his son Aethelwulf to rescue Queen Kwenthrith.
4.03 32 Season4Episode3 Mercy March 3, 2016
Ragnar informs Floki of a heavy price he has paid for his actions; Rollo finds an unlikely ally in Count Odo; Bjorn has to fight a fierce opponent in the wilderness.
4.04 33 Season4Episode4 Yol March 10, 2016
A Norwegian king and Bjorn, who is accompanied by a new partner, will get welcomed to the Great Hall in Kattegat. King Aelle will end up arriving at Wessex for Christmas and will be unimpressed with the development of family relations. Meanwhile, in Paris, Rollo’s future is going to depend on whether he can win over his new bride, as a papal delegation arrives to arrange a divorce.
4.05 34 Vikings S4-Episode 5 Promo 2 Promised March 17, 2016
There's an air of betrayal as those whom Odo trusts plot against him; Ecbert agrees to support Kwenthrith in Mercia; Pregnancy brings happiness to Lagertha and Kalf and a marriage is arranged.
4.06 35 What Might Have Been Promo What Might Have Been March 24, 2016
At the Thing in Kattegat, Ragnar reveals his plan to raid Paris again, and, although the fleet is storm-tossed as it sets out, the challenge lies in France, where Rollo awaits. Meanwhile, Ecbert dispatches Aethelwulf and Alfred on a pilgrimage to Rome.
4.07 36 Season 4 Episode 7 Promo The Profit and the Loss March 31, 2016
In England, King Ecbert schemes to secure the crown of Mercia, while outside Paris, a considerable force of Vikings attack Rollo's defenses. Also, the mysterious wanderer Harbard returns to Kattegat and causes a stir among the women.
4.08 37 Portage Promo Portage April 07, 2016
Ragnar’s leadership is going to get called into question after their defeat, evacuation and retreat down-river. Although, he will have a plan that he is going to keep under wraps.Rollo and Gisla are going to have information that will strengthen Rollo’s position at the French court, while Count Odo will be slow to identify his true enemies, which could have serious consequences.
4.09 38 Death All Round Promo Death All 'Round April 14, 2016
As they near Paris, the Vikings relaunch their boats, but this time they bear interesting structures made by Floki; Aethelwulf and Alfred arrive in Rome, where honors are bestowed by Pope Leo, but in Wessex, relations are less than cordial between King Ecbert and a disgruntled King Aelle.
4.10 39 The Last Ship promo The Last Ship April 21, 2016
A fierce battle between the Vikings and the French eventually comes down to Ragnar against Rollo and the outcome seals the fates of the two brothers.
Volume 2
4.11 40 Lagertha and her lover The Outsider November 30, 2016
Ragnar arrives home unexpectedly to see what has become of his sons and to handle unfinished business with King Ecbert; Lagertha plans a power play; Bjorn prepares to explore the Mediterranean in a sleek, new boat built for him by Floki.
4.12 41 S04EP12 The Vision December 07, 2016
The Kattegat locals chide Ragnar that the gods have deserted him as he struggles to crew his voyage to Wessex. It’s Bjorn who has charisma now as he prepares to fulfill his long-held dream to explore the Mediterranean in a sleek new boat built for him by Floki. By contrast, Ragnar must accept weathered boats and a crew he has bribed but when Aslaug foresees that the fleet will be lost in a vicious storm her warnings go un-heeded by Ragnar and her precious son, Ivar.
4.13 42 S04EP13 Two Journeys December 14, 2016
Ragnar’s fleet is shipwrecked and washes up on the Wessex coast, but without enough survivors to form a credible force, Ragnar and Ivar have a difficult decision to make. Rollo meets his Viking comrades again and can’t resist the urge to join Bjorn’s voyage, risking his marriage and his new Frankish identity. Ragnar too is taking a risk as he carries Ivar towards the Royal Villa in Wessex – throwing himself and his son upon the mercy of King Ecbert.
4.14 43 S04EP14.jpg In the Uncertain Hour Before the Morning December 21, 2016
Lagertha fulfills her long-held ambition to take Kattegat; King Ecbert must decide whether to hand his friend, Ragnar, over to King Aelle, who has sworn revenge on him.
4.15 44 All Angels All His Angels December 28, 2016
Ragnar and Ivar plot against the Saxons and reach a new level of understanding. King Aelle can not hide his pleasure when Ragnar arrives in a cage and shows no mercy.
4.16 45 Crossing Promo Crossings January 04, 2017
Bjorn's fleet sails onward and launches a surprise attack; back in Kattegat, Lagertha continues in her quest for power.
4.17 46 The Great Army 4x17 The Great Army January 11, 2017
The Viking army begins to gather in Kattegat; Lagertha must remain vigilant in the absence of her son, Bjorn.
4.18 47 Revenge Revenge January 18, 2017
Ragnar's plan comes to fruition; the Viking army lands on the coast of Northumbria.
4.19 48

On the Eve

On the Eve January 25, 2017
The Viking army causes panic in the English countryside as King Ecbert and Aethelwulf plan the defense of the realm.
4.20 49


The Reckoning February 01, 2017
Prince Aethelwulf finds himself subject to the Vikings' battle master plan; Ecbert remains behind with a plan of his own.



Coming soon...