Vikings - Season 4, Episode 1 - A Good Treason (2016)
8.7
As Ragnar lies in his sick bed in Kattegat, events unfold beyond his control.
Director: Ciaran Donnelly
Writer: Michael Hirst (created by), Michael Hirst
Stars: Travis Fimmel, Katheryn Winnick, Clive Standen, Gustaf Skarsgård