With season 5 arriving this week, here’s a handy reminder of what happened in Vikings season 4.

Warning: contains spoilers (as you might expect!)

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One of the standards of medieval storytelling is the concept of the Wheel of Fortune.

Bjorn leaves Kattegat to find himself and Flokis punishment leads to the death of his daughter with Helga.

She is now a prisoner in Ecberts gilded cage.

Lagertha also deals with treachery, though far more successfully.

Lagertha publicly emasculates the pretender, and Kalf offers to share her own Jarldom with her.

She pays Erlendur back as well by encouraging his wife Torvi a battered spouse to leave Hedeby with Bjorn.

Unfortunately, her wish for another child is dashed when she then miscarries.

Rollo has been busy in Paris.

The Vikings no longer have faith in Ragnars abilities to lead.

Ragnar returns to Kattegat and almost immediately disappears.

In his absence, news arrives as to the secret of the fate of the Wessex colony.

Floki is busy building ships for Bjorns expedition to the Mediterranean with Hvitserk and Harald, and Lagertha refuses.

Ivar and his father kill the rest before going to Ecberts court.

However, this is short-lived as Rollos Vikings roots have him wanting to join them.

He releases them and grants them safe passage on the understanding that they will take him with them.

Lagertha and her ruling force of women lead Kattegat in a building of new fortifications around Ragnars former capital.

Before he dies, he reveals who is really behind the attack.

Aethelwulf agrees and leaves for Mercia where the Viking army lays in wait for him.

When the Lothbrok brothers find the court empty, they are disappointed.

Floki finds Helga and buries her, devastated.

Ecbert is eventually found.

He uses a knife to slash his wrists in his Roman bathhouse.

During the argument, Ivar kills Sigurd with a throwing axe, forever dividing the brothers.