His health failing and fearing for his legacy, Alfred sends Uhtred to confront a new threat: fierce Danish warrior Bloodhair and his sorceress, Skade.

Falling afoul of Alfred, Uhtred flees north to his brother, Ragnar. His eye on the throne, Aethelwold begins assembling an alliance to strike Wessex.

Bloodhair and Aethelwold try to coax Uhtred into their alliance against Alfred. Fearing for her life, Aethelflaed turns to Father Beocca for aid.

Uhtred turns his attention to Aethelflaed's plight. Alfred forces Edward to face his duty. Ragnar's army marches but traitors emerge from within.

A deadly betrayal threatens to splinter Ragnar's army. Uhtred forms a cunning battle plan and finds an unexpected ally in young Edward.

Edward makes a kingly decision. Alfred lays plans for his son's future reign. Aethelwold faces a treacherous task. Uhtred and Brida search out a seer.

Uhtred risks returning to Wessex to fulfill his vow to Brida. As the royal wedding approaches, Aethelwold spreads discord from the shadows.

At the end of his days, Alfred takes Uhtred into his confidence about his plans for Edward's uncertain future, but Aelswith charts a different course.

As a climactic battle with the Danes draws near, untested Edward faces dire decisions about the fates of Uhtred, Wessex -- and England.