Vikings' Season 4: Ragnar's Sons – The Hollywood Reporter

THR breaks down how the newly grown-up characters fared in history and the "big issues" ahead for the family.

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Vikings' Season 4, Part 2 Release Date Next Week, Episode 11 Plot Revealed

Vikings' Season 4: Ragnar's Sons – The Hollywood Reporter

Vikings: Ragnar's Grown-Up Sons in Season 4's Return

Vikings' Season 2 Premiere Date — February 27, 2014 on History – TVLine

Vikings' Season 4: Ragnar's Sons – The Hollywood Reporter

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Vikings season 4 preview, Time Slips

Vikings (TV series) - Wikipedia

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Vikings season 4 plot update: Ragnar to punish Rollo, Lagertha and Floki after their dark confession