From a media release:

The deception, corruption, and bloodshed culminates in the momentous season 4 finale of HISTORY’s #1 series Vikings airing Wednesday, February 1 at 9 p.m. ET/PT. In the explosive season finale, Golden Globe Award-winner Jonathan Rhys Meyers makes his first on-screen appearance as the pivotal character, Heahmund, a warrior bishop. Rhys Meyers joins the cast for season 5 of Vikings which is currently in production in Ireland. A first-look of Rhys Meyers as Heahmund is pictured below.

In the epic Season 4 finale titled “The Reckoning,” Aethelwulf (Moe Dunford) finds himself subject to the Vikings’ battle master plan. Meanwhile, Ecbert (Linus Roache) remains behind with a plan of his own.

Fans can catch up on this season of Vikings on HISTORY.ca, HISTORY on Demand, HISTORY Go app, and iTunes.

Vikings is an international Canadian/Irish co-production by Take 5 Productions and World 2000. HISTORY broadcasts both domestically in Canada and the U.S. MGM Television is the worldwide distributor outside of Ireland and Canada. Vikings is produced in association with Corus Entertainment.