Guest Stars John Kavanagh as The Seer Jefferson Hall as Torstein Ivan Kaye as King Aelle of Northumbria Nathan O'Toole as Bjorn Lothbrok Tadhg Murphy as Arne Elinor Crawley as Thyri Haraldson Diarmaid Murtagh as Leif David Pearse as Svein Carrie Crowley as Elisef Vladimir Kulich as Eric Eric Higgins as Knut Peter Gaynor as Lord Edgar Sam Doyle as Saxon 1 Laura Sibbick as Saxon Woman Jonathon Kemp as Wigea Sam Lucas Smith as Edwin Martin White as Housecarl Simon Coury as Saxon Priest