• Starring: Travis Fimmel (Ragnar), Katheryn Winnick (Lagertha), Clive Standen (Rollo), Jessalyn Gilsig (Siggy), Gustaf Skarsgård (Floki), George Blagden (Athelstan), Alexander Ludwig (Bjorn), Alyssa Sutherland (Aslaug), Ben Robson (Kalf), Linus Roache (King Ecbert)
• Guest Starring: Amy Bailey (Princess Kwenthrith), Moe Dunford (Aethelwulf), Maude Hirst (Helga), Gaia Weiss (Porunn), Jefferson Hall (Torstein), Jennie Jacques (Judith), John Kavanagh (The Seer)
• Additional Cast in Order of Appearance: Steve Wall (Einar), Cathál Ó'Hallin (Hvitserk), Cormac Melia (Ubbe), Philip O'Sullivan (Bishop Edmund), Ian Beattie (King Brihtwulf), Aaron Monaghan (Burgred), Lochlainn Ó Mearáin (First Noble), Conor Ryan (Second Noble)
• Written By: Michael Hirst
• Directed By: Ken Girotti

• Starring: Travis Fimmel (Ragnar), Katheryn Winnick (Lagertha), Clive Standen (Rollo), Jessalyn Gilsig (Siggy), Gustaf Skarsgård (Floki), George Blagden (Athelstan), Alexander Ludwig (Bjorn), Alyssa Sutherland (Aslaug), Ben Robson (Kalf), Kevin Durand (The Wanderer), Linus Roache (King Ecbert)
• Guest Starring: Amy Bailey (Princess Kwenthrith), Moe Dunford (Aethelwulf), Maude Hirst (Helga), Gaia Weiss (Porunn), Jefferson Hall (Torstein), Jennie Jacques (Judith), John Kavanagh (The Seer)
• Additional Cast in Order of Appearance: Aaron Monaghan (Burgred), Lochlann Ó Mearáin (First Noble), Conor Ryan (Second Noble), Philip O'Sullivan (Bishop Edmund), Matthew O'Brien (Saxon #1 Farmstead), Ciarán McGlynn (Saxon #2 Farmstead), Lenny Hayden (Viking #1 Farmstead), Nigel O'Hallin (Viking #2 Farmstead), Cathál Ó'Hallin (Hvitserk), Cormac Melia (Ubbe), Steve Wall (Einar), Laurence Falconer (Rider)
• Written By: Michael Hirst
• Directed By: Ken Girotti

• Starring: Travis Fimmel (Ragnar), Katheryn Winnick (Lagertha), Clive Standen (Rollo), Jessalyn Gilsig (Siggy), Gustaf Skarsgård (Floki), George Blagden (Athelstan), Alexander Ludwig (Bjorn), Alyssa Sutherland (Aslaug), Kevin Durand (The Wanderer), Linus Roache (King Ecbert)
• Guest Starring: Amy Bailey (Princess Kwenthrith), Moe Dunford (Aethelwulf), Maude Hirst (Helga), Gaia Weiss (Porunn), Jefferson Hall (Torstein), Jennie Jacques (Judith), John Kavanagh (The Seer)
• Additional Cast in Order of Appearance: Cathál Ó'Hallin (Hvitserk), Cormac Melia (Ubbe), Chris McHallem (First Saxon Noble), Marty Maguire (Second Saxon Noble), Muiris Crowley (Third Saxon Noble), John Merriman (Second Mercian Archer), Aaron Monaghan (Burgred), Lochlann Ó Mearáin (First Noble), Conor Ryan (Second Noble), Lalor Roddy (Fisherman), Amy Potter (Woman), Niamh Algar (Second Woman), Tony Owen (Older Man)
• Written By: Michael Hirst
• Directed By: Jeff Woolnough

• Starring: Travis Fimmel (Ragnar), Katheryn Winnick (Lagertha), Clive Standen (Rollo), Jessalyn Gilsig (Siggy), Gustaf Skarsgård (Floki), George Blagden (Athelstan), Alexander Ludwig (Bjorn), Alyssa Sutherland (Aslaug), Ben Robson (Kalf), Kevin Durand (The Wanderer), Linus Roache (King Ecbert)
• Guest Starring: Amy Bailey (Princess Kwenthrith), Moe Dunford (Aethelwulf), Maude Hirst (Helga), Jennie Jacques (Judith), Ivan Kaye (King Aelle), Gaia Weiss (Porunn)
• Additional Cast in Order of Appearance: Cathál Ó'Hallin (Hvitserk), Cormac Melia (Ubbe), Aaron Monaghan (Burgred), Philip O'Sullivan (Bishop Edmund), Steve Wall (Einar), Elinor Crawley (Thyri), Robert Fawsitt (Drunken Saxon), Bryan Baker (Drunken Northman), Edvin Endre (Erlendur), Georgia Hirst (Torvi)
• Written By: Michael Hirst
• Directed By: Jeff Woolnough

• Starring: Travis Fimmel (Ragnar), Katheryn Winnick (Lagertha), Clive Standen (Rollo), Gustaf Skarsgård (Floki), George Blagden (Athelstan), Alexander Ludwig (Bjorn), Alyssa Sutherland (Aslaug), Ben Robson (Kalf), Linus Roache (King Ecbert)
• Guest Starring: Moe Dunford (Aethelwulf), Maude Hirst (Helga), Gaia Weiss (Porunn), Jennie Jacques (Judith), John Kavanagh (The Seer)
• Additional Cast in Order of Appearance: Michael Hough (Warrior #2), Jack Hickey (Warrior #3), Ciarán McGlynn (Saxon #2 Farmstead), Marty Maguire (Second Saxon Noble), Muiris Crowley (Third Saxon Noble), Jill Harding (Judith's Maid), Cathál Ó'Hallin (Hvitserk), Cormac Melia (Ubbe), Steve Wall (Einar)
• Written By: Michael Hirst
• Directed By: Helen Shaver

• Starring: Travis Fimmel (Ragnar), Katheryn Winnick (Lagertha), Clive Standen (Rollo), Jessalyn Gilsig (Siggy), Gustaf Skarsgård (Floki), George Blagden (Athelstan), Alexander Ludwig (Bjorn), Alyssa Sutherland (Aslaug), Ben Robson (Kalf), Linus Roache (King Ecbert)
• Guest Starring: Moe Dunford (Aethelwulf), Maude Hirst (Helga), Gaia Weiss (Porunn), Jennie Jacques (Judith), Søren Pilmark (Stender)
• Additional Cast in Order of Appearance: Cathál Ó'Hallin (Hvitserk), Cormac Melia (Ubbe), Jill Harding (Judith's Maid), Eva Bartley (Midwife), Jonathan Gunning (Priest), Philip O'Sullivan (Bishop Edmund), Greg Orvis (Siegfried), Edvin Endre (Erlendur), Georgia Hirst (Torvi), Frankie McCafferty (Sinric)
• Written By: Michael Hirst
• Directed By: Helen Shaver

• Starring: Travis Fimmel (Ragnar), Katheryn Winnick (Lagertha), Clive Standen (Rollo), Gustaf Skarsgård (Floki), Alexander Ludwig (Bjorn), Alyssa Sutherland (Aslaug), Ben Robson (Kalf), Lothaire Bluteau (Emperor Charles), Linus Roache (King Ecbert)
• Guest Starring: Amy Bailey (Princess Kwenthrith), Moe Dunford (Aethelwulf), Maude Hirst (Helga), Owen Roe (Count Odo), Gaia Weiss (Porunn), Jennie Jacques (Judith), Morgane Polanski (Princess Gisla)
• Additional Cast in Order of Appearance: Frankie McCafferty (Sinric), Greg Orvis (Siegfried), Huw Parmenter (Roland), Laurence Foster (French Archbishop), Aonghus Og McAnally (Messenger), Brian Fortune (Injured Noble), Edvin Endre (Erlendur), Georgia Hirst (Torvi), Philip O'Sullivan (Bishop Edmund), Dave Curry (Mercian Commander)
• Written By: Michael Hirst
• Directed By: Kelly Makin

• Starring: Travis Fimmel (Ragnar), Katheryn Winnick (Lagertha), Clive Standen (Rollo), Gustaf Skarsgård (Floki), Alexander Ludwig (Bjorn), Alyssa Sutherland (Aslaug), Ben Robson (Kalf), Lothaire Bluteau (Emperor Charles)
• Guest Starring: Maude Hirst (Helga), Morgane Polanski (Princess Gisla), Owen Roe (Count Odo), Gaia Weiss (Porunn)
• Additional Cast in Order of Appearance: Georgia Hirst (Torvi), Edvin Endre (Erlendur), Greg Orvis (Siegfried), Huw Parmenter (Roland), Mark Huberman (Louis), Michael Hough (Frightened Warrior), Sean Duggan (Monk), Laurence Foster (French Archbishop), Lauterio Zamparelli (Officer), Karen Hassan (Therese)
• Written By: Michael Hirst
• Directed By: Kelly Makin

• Starring: Travis Fimmel (Ragnar), Katheryn Winnick (Lagertha), Clive Standen (Rollo), Gustaf Skarsgård (Floki), George Blagden (Athelstan), Alexander Ludwig (Bjorn), Alyssa Sutherland (Aslaug), Ben Robson (Kalf), Lothaire Bluteau (Emperor Charles), Linus Roache (King Ecbert)
• Guest Starring: Moe Dunford (Aethelwulf), Maude Hirst (Helga), Owen Roe (Count Odo), Jennie Jacques (Judith), Morgane Polanski (Princess Gisla)
• Additional Cast in Order of Appearance: Mark Huberman (Louis), Anthony Kinahan (Sentry), Rex Ryan (Soldier), Colm O'Brien (Tower Sentry), Frankie McCafferty (Sinric), Greg Orvis (Siegfried), Huw Parmenter (Roland), Eddie Drew (Odin), Carl Shaaban (Jesus), Tommaso Di Vincenzo (Terrifying Creature), Joe Doyle (1st Older Viking Man), Brian McGuinness (2nd Older Viking Man), James Murphy (Ansgar), Karen Hassan (Therese), Edvin Endre (Erlendur), Ciarán O'Grady (Viking Man), Laurence Foster (French Archbishop)
• Written By: Michael Hirst
• Directed By: Ken Girotti

• Starring: Travis Fimmel (Ragnar), Katheryn Winnick (Lagertha), Clive Standen (Rollo), Gustaf Skarsgård (Floki), Ben Robson (Kalf), Lothaire Bluteau (Emperor Charles)
• Guest Starring: Maude Hirst (Helga), Owen Roe (Count Odo), John Kavanagh (The Seer), Morgane Polanski (Princess Gisla)
• Additional Cast in Order of Appearance: Huw Parmenter (Roland), Edvin Endre (Erlendur), Frankie McCafferty (Sinric), Laurence Foster (French Archbishop), Karen Hassan (Therese)
• Written By: Michael Hirst
• Directed By: Ken Girotti