Vikings › Season 4

S4 E1: A Good Treason

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.

Air date	Feb 18, 2016
Runtime	47 minutes
TMDB rating	★ 7.7/10