Join or Sign In
Sign in to customize your TV listings
By joining TV Guide, you agree to our Terms of Use and acknowledge the data practices in our Privacy Policy.
20 Episodes 2016 - 2017
Season 4 of this drama series opens after Ragnar's (Travis Fimmel) victory in Paris. However, he returns to Kattegat dangerously ill. Thoughts of his death galvanize the forces who seek to succeed him as king, including his wife Queen Aslaug (Alyssa Sutherland) and his oldest son, Bjorn (Alexander Ludwig). Meanwhile, Lagertha (Katheryn Winnick) continues power struggles with her calculating, former second in command, Kalf (Ben Robson). Rollo (Clive Standen) betrays his Vikings heritage by remaining in Frankia.
Episode 1
Thu, Feb 18, 2016 45 mins
In the Season 4 premiere, a dangerously ill Ragnar returns to Kattegat, where his suspected death kicks off a scramble to succeed him. Meanwhile, Lagertha engages in a power struggle with her calculating, former second in command, Kalf; Rollo betrays his heritage and remains in Frankia; and Floki pays the price for his brutality against the Christian priest.
Episode 2
Thu, Feb 25, 2016 45 mins
Ragnar and Floki clash in Kattegat as Rollo woos his new bride in Paris. Also, the wilderness tests Bjorn's survival skills, and King Ecbert enlists his son to rescue Queen Kwenthrith.
Episode 3
Thu, Mar 3, 2016 45 mins
Floki remains a prisoner and Ragnar reveals to him the heavy price that has been paid for his actions; a mysterious visitor counsels mercy to Ragnar; intrigue in the French Court includes Rollo finding an unlikely ally in Count Odo. Also, Bjorn battles a fierce opponent in the wilderness.
Episode 4
Thu, Mar 10, 2016 45 mins
A Norwegian king and Bjorn, who is accompanied by a new partner, are welcomed to the Great Hall in Kattegat; King Aelle arrives at Wessex for Christmas and is unimpressed with the development of family relations. Meanwhile, in Paris, Rollo's future depends on whether he can win over his new bride, as a papal delegation arrives to arrange a divorce.
Episode 5
Thu, Mar 17, 2016 45 mins
Betrayal is in the air at the Court in Paris and Wessex as trusted people plot against Odo, while Ecbert agrees to throw his support to Kwenthrith in Mercia. Meanwhile, Ragnar reveals his deepest secret to Yidu; pregnancy brings happiness to Lagertha and Kalf; and an arranged marriage doesn't come on as planned.
Episode 6
Thu, Mar 24, 2016 45 mins
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.
Episode 7
Thu, Mar 31, 2016 45 mins
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.
Episode 8
Thu, Apr 7, 2016 45 mins
Ragnar's leadership is called into question after their defeat, evacuation and retreat down-river, although he does have a plan that he keeps under wraps. Rollo and Gisla have information that will strengthen Rollo's position at the French court, while Count Odo is slow to identify his true enemies, which could have serious consequences.
Episode 9
Thu, Apr 14, 2016 45 mins
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.
Episode 10
Thu, Apr 21, 2016 45 mins
Victory proves costly in the battle between the Vikings and the French as Ragnar squares off against Rollo, sealing the fates of the two brothers.
Episode 11
Wed, Nov 30, 2016 45 mins
Ragnar returns to Kattegat and formulates a plan to head back to Wessex, where he intends to right past wrongs.
Episode 12
Wed, Dec 7, 2016 45 mins
Ragnar's difficulties raising a crew for the voyage to Wessex leaves Kattegat locals admonishing him that the gods have deserted him. Meanwhile, Bjorn's dream to explore the Mediterranean is within reach.
Episode 13
Wed, Dec 14, 2016 45 mins
Ragnar and Ivar deal with an issue involving their crew; Bjorn has a surprising reunion.
Episode 14
Wed, Dec 21, 2016 45 mins
Lagertha is near realizing a long-held ambition; Ragnar acquires a surprising concession from King Ecbert.
Episode 15
Wed, Dec 28, 2016 45 mins
Ragnar and Ivar establish a new level of understanding while plotting against the Saxons.
Episode 16
Wed, Jan 4, 2017 45 mins
Bjorn's fleet launches a surprise attack, while Lagertha's quest for power continues in Kattegat.
Episode 17
Wed, Jan 11, 2017 45 mins
A great Viking army assembles at Kattegat, while Lagertha remains vigilant in the absence of Bjorn.
Episode 18
Wed, Jan 18, 2017 45 mins
Ragnar's plan is realized; the Viking army alights on the coast of Northumbria.
Episode 19
Wed, Jan 25, 2017 45 mins
The Viking army rampages through the English countryside, while King Ecbert and Aethelwulf seek to defend of the realm.
Episode 20
Wed, Feb 1, 2017 45 mins
Prince Aethelwulf is targeted by the Vikings' battle plan, while Ecbert stays behind formulating his own plan.