Originally broadcast as a television series on the History Channel in 2016

Vikings returns for a gripping fourth season. Season three culminated with the extraordinary battle in Paris, where Ragnar seized victory from the jaws of defeat, but still returns to Kattegat dangerously ill. Thoughts of his death galvanize the forces who seek to succeed him as king, including his wife Queen Aslaug and his oldest son, Bjorn. Meanwhile, Lagertha continues power struggles with her calculating, former second in command, Kalf

Widescreen (1.78:1)

Special features: The transformation of Rollo; The Viking seafaring prowess

Travis Fimmel, Katheryn Winnick, Clive Standen, Gustaf Skarsgard, Alexander Ludwig, George Blagden, Maude Hirst, Alyssa Sutherland

TV rating: TV 14

IMDB rating: TV-MA

DVD, NTSC region 1, widescreen (1.78:1) presentation; Dolby Digital 5.1

English dialogue; Spanish or French subtitles, English subtitles for the deaf and hard of hearing (SDH), closed-captioned

Disc 1.

A good treason -- Kill the queen -- Mercy

Disc 2.

Yol -- Promised -- What might have been -- Profit and the loss

Disc 3.

Portage -- Death all 'round -- Last ship