Michael Hirst talks to THR about Ragnar's "unfinished business" and dark depression in the midseason return.
Vikings Season 4 Midseason Premiere Return Date Set for November
Vikings: Our dark age, as seen on History
Vikings Ending Explained
Watching Vikings on History and the resemblance of these two in looks, mannerisms, and personality is remarkable. : r/Sonsofanarchy
Vikings' recap: 'Scarred
Vikings Season 5 Episode 20: Michael Hirst Explains Final Scene, Season 6 Teases - TV Guide
Vikings' Showrunner on Ragnar Lothbrok's Darker Side – The Hollywood Reporter
Why do the golden doors close in front of Ragnar Lothbrok in Vikings? Does that mean he didn't make it to Valhalla? - Quora
A Character Study of Ragnar Lothbrok from Vikings - HubPages
Lagertha Is Old and Broken Now on 'Vikings' and I'm Upset About It
How 'Vikings' brought historical TV drama back from the afterlife