8.4/105,907 votes#1 - A Good Treason
Season 4 Episode 1 - Aired 2/18/2016
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. Floki pays the price for his brutality against the Christian priest.
Director: Ciaran Donnelly
Writer: Michael Hirst
8.2/105,171 votes#2 - Kill the Queen
Season 4 Episode 2 - Aired 2/25/2016
As Ragnar and Floki remain at odds, Rollo makes great efforts in Paris to win over his new bride, Princess Gisla. Meanwhile, King Ecbert sets the task for his son Aethelwulf to rescue Queen Kwenthrith.
Director: Ciaran Donnelly
Writer: Michael Hirst
8.0/104,984 votes#3 - Mercy
Season 4 Episode 3 - Aired 3/3/2016
Floki learns of the 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.
Director: Ciaran Donnelly
Writer: Michael Hirst
8.0/105,090 votes#4 - Yol
Season 4 Episode 4 - Aired 3/10/2016
King Aelle goes to Wessex for Christmas and is not impressed with how family relations are developing. Rollo's future hangs in the balance.
Director: Helen Shaver
Writer: Michael Hirst
7.7/104,938 votes#5 - Promised
Season 4 Episode 5 - Aired 3/17/2016
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.
Director: Helen Shaver
Writer: Michael Hirst
7.9/104,863 votes#6 - What Might Have Been
Season 4 Episode 6 - Aired 3/24/2016
Ragnar declares another raid on Paris at the Thing in Kattegat. Ecbert also has a journey in mind as he dispatches Aethelwulf and Alfred on a pilgrimage to Rome.
Director: Ken Girotti
Writer: Michael Hirst
8.3/105,000 votes#7 - The Profit and the Loss
Season 4 Episode 7 - Aired 3/31/2016
In England, King Ecbert's true ambitions are revealed as he plots to gain the crown of Mercia. The Vikings attack Paris with considerable force, but will Rollo's defenses be too much for them to overcome? Meanwhile, Harbard, the mysterious wanderer, returns and causes a stir amongst the women of Kattegat.
Director: Ken Girotti
Writer: Michael Hirst
8.1/104,756 votes#8 - Portage
Season 4 Episode 8 - Aired 4/7/2016
Defeat for the Vikings calls Ragnar's leadership into question as they evacuate their camp and move back down river. Ragnar remains inscrutable until he orders the fleet to beach at a cliff face and unveils an ingenious plan. Rollo and Gisla have news that strengthens Rollo's position at the French Court.
Director: Ken Girotti
Writer: Michael Hirst
8.0/104,752 votes#9 - Death All 'Round
Season 4 Episode 9 - Aired 4/14/2016
The labors of the Vikings eventually bear fruit as, within sight of Paris, they re-launch their boats but this time along with some interesting structures that Floki has built. Aethelwulf and Alfred eventually arrive in Rome and honors are conferred by Pope Leo but relations are not so cordial in Wessex between King Ecbert and the disgruntled King Aelle.
Director: Jeff Woolnough
Writer: Michael Hirst
9.1/108,529 votes#10 - The Last Ship
Season 4 Episode 10 - Aired 4/21/2016
A ferocious battle between the Vikings and the French eventually comes down to Ragnar against Rollo. The outcome will seal the fate of the two brothers.
Director: Jeff Woolnough
Writer: Michael Hirst
8.0/105,344 votes#11 - The Outsider
Season 4 Episode 11 - Aired 11/30/2016
Ragnar returns to Kattegat and formulates a plan to head back to Wessex, where he intends to right past wrongs.. Meanwhile, Lagertha plans a power play in Kattegat and Bjorn prepares to fulfill his long-held dream to explore the Mediterranean in a sleek new boat built for him by Floki.
Director: Daniel Grou
Writer: Michael Hirst
7.9/104,801 votes#12 - The Vision
Season 4 Episode 12 - Aired 12/7/2016
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.
Director: Daniel Grou
Writer: Michael Hirst
8.2/104,770 votes#13 - Two Journeys
Season 4 Episode 13 - Aired 12/14/2016
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.
Director: Sarah Harding
Writer: Michael Hirst
8.7/106,173 votes#14 - In the Uncertain Hour Before the Morning
Season 4 Episode 14 - Aired 12/21/2016
Lagertha attempts to fulfill a long-held ambition. Ragnar negotiates an unexpected concession from King Ecbert.
Director: Sarah Harding
Writer: Michael Hirst
9.6/1015,892 votes#15 - All His Angels
Season 4 Episode 15 - Aired 12/28/2016
Ragnar and Ivar plot against the Saxons and reach a new level of understanding.
Director: Ciaran Donnelly
Writer: Michael Hirst
8.5/105,716 votes#16 - Crossings
Season 4 Episode 16 - Aired 1/4/2017
Bjorn's fleet sails onward and launches a surprise attack. Back in Kattegat, Lagertha continues in her quest for power.
Director: Ciaran Donnelly
Writer: Michael Hirst
8.0/104,696 votes#17 - The Great Army
Season 4 Episode 17 - Aired 1/11/2017
The Viking army begins to gather in Kattegat. Lagertha must remain vigilant in the absence of her son, Bjorn.
Director: Jeff Woolnough
Writer: Michael Hirst
8.8/106,245 votes#18 - Revenge
Season 4 Episode 18 - Aired 1/18/2017
Ragnar's plan comes to fruition. The Viking army lands on the coast of Northumbria.
Director: Jeff Woolnough
Writer: Michael Hirst
8.9/106,264 votes#19 - On the Eve
Season 4 Episode 19 - Aired 1/25/2017
The Viking army causes panic in the English countryside as King Ecbert and Aethelwulf plan the defense of the realm.
Director: Ben Bolt
Writer: Michael Hirst
8.8/105,781 votes#20 - The Reckoning
Season 4 Episode 20 - Aired 2/1/2017
Prince Aethelwulf finds himself subject to the Vikings' battle master plan. Ecbert remains behind with a plan of his own.
Director: Ben Bolt
Writer: Michael Hirst
The Best Episodes of Vikings Season 4
Every episode of Vikings Season 4 ranked from best to worst. Discover the Best Episodes of Vikings Season 4!
The adventures of Ragnar Lothbrok, the greatest hero of his age. The series tells the sagas of Ragnar's band of Viking brothers and his family,...
Genres:Action & AdventureDramaWar & Politics
Season 4 Ratings Summary
"A Good Treason" is the best rated episode of "Vikings" season 4. It scored 8.4/10 based on 5907 votes. Directed by Ciaran Donnelly and written by Michael Hirst, it aired on 2/18/2016. This episode is rated 0.2 points higher than the second-best, "Kill the Queen".