Katie McGrath did not intend to make a career for herself in the acting profession, studying History at Trinity College, Dublin. Upon graduating, she became interested in fashion journalism and worked for lifestyle and fashion magazine, Image. After this, her mother's best friend, an assistant director, helped get her a job as a wardrobe assistant on the series The Tudors. Whilst working on the production some of the staff suggested she tried acting. A cast driver on the series passed her a list with the actors' agents on it, so she wrote and sent photos to them. Success followed quickly and McGrath made her debut in the TV film Damage. Her big break came, however, when she was cast as the evil Morgana in the hit BBC series Merlin. Further roles followed, including a part in Madonna's directorial debut W.E..
Known For
Credits
Cast Credits
The Continental: From the World of John Wick (2023)
Guest starring as The Adjudicator
(3 episodes)
- Episode 1x03: Theater of Pain (Oct 6, 2023)
- Episode 1x02: Loyalty to the Master (Sep 29, 2023)
- Episode 1x01: Brothers in Arms (Sep 22, 2023)
Frontier (2016)
Starring as Elizabeth Carruthers
(7 episodes)
- Episode 2x05: Cannonball (Nov 15, 2017)
- Episode 2x04: Mutiny (Nov 8, 2017)
- Episode 2x03: The Wolf and the Bear (Nov 1, 2017)
- Episode 2x02: Wanted (Oct 25, 2017)
- Episode 2x01: Dead Reckoning (Oct 18, 2017)
- Episode 1x05: The Disciple (Dec 4, 2016)
- Episode 1x04: Wolves (Nov 27, 2016)
Slasher (2016)
Starring as Sarah Bennett
(8 episodes)
- Episode 1x08: Soon Your Own Eyes Will See (Apr 15, 2016)
- Episode 1x07: In the Pride of His Face (Apr 8, 2016)
- Episode 1x06: The One Who Sows His Own Flesh (Apr 1, 2016)
- Episode 1x05: Ill-Gotten Gains (Mar 25, 2016)
- Episode 1x04: As Water Is Corrupted Unless It Moves (Mar 18, 2016)
- Episode 1x03: Like as Fire Eateth Up and Burneth Wood (Mar 11, 2016)
- Episode 1x02: Digging Your Grave with Your Teeth (Mar 4, 2016)
- Episode 1x01: An Eye for an Eye (Mar 4, 2016)
Supergirl (2015)
Starring as Lena Luthor
(74 episodes)
- Episode 6x20: Kara (Nov 9, 2021)
- Episode 6x19: The Last Gauntlet (Nov 9, 2021)
- Episode 6x18: Truth or Consequences (Nov 2, 2021)
- Episode 6x17: I Believe in a Thing Called Love (Oct 26, 2021)
- Episode 6x16: Nightmare in National City (Oct 19, 2021)
- Episode 6x15: Hope for Tomorrow (Oct 12, 2021)
- Episode 6x14: Magical Thinking (Oct 5, 2021)
- Episode 6x13: The Gauntlet (Sep 28, 2021)
- Episode 6x12: Blind Spots (Sep 21, 2021)
- Episode 6x11: Mxy in the Middle (Sep 14, 2021)
- Episode 6x10: Still I Rise (Sep 7, 2021)
- Episode 6x09: Dream Weaver (Aug 31, 2021)
- Episode 6x08: Welcome Back, Kara! (Aug 24, 2021)
- Episode 6x07: Fear Knot (May 11, 2021)
- Episode 6x04: Lost Souls (Apr 20, 2021)
- Episode 6x03: Phantom Menaces (Apr 13, 2021)
- Episode 6x02: A Few Good Women (Apr 6, 2021)
- Episode 6x01: Rebirth (Mar 30, 2021)
- Episode 5x19: Immortal Kombat (May 17, 2020)
- Episode 5x18: The Missing Link (May 10, 2020)
- Episode 5x17: Deus Lex Machina (May 3, 2020)
- Episode 5x14: The Bodyguard (Mar 8, 2020)
- Episode 5x13: It's a Super Life (Feb 23, 2020)
- Episode 5x12: Back from the Future - Part Two (Feb 16, 2020)
- Episode 5x11: Back from the Future - Part One (Jan 26, 2020)
- Episode 5x10: The Bottle Episode (Jan 19, 2020)
- Episode 5x09: Crisis on Infinite Earths: Part One (Dec 8, 2019)
- Episode 5x08: The Wrath of Rama Khan (Dec 1, 2019)
- Episode 5x07: Tremors (Nov 17, 2019)
- Episode 5x06: Confidence Women (Nov 10, 2019)
- Episode 5x05: Dangerous Liaisons (Nov 3, 2019)
- Episode 5x04: In Plain Sight (Oct 27, 2019)
- Episode 5x03: Blurred Lines (Oct 20, 2019)
- Episode 5x02: Stranger Beside Me (Oct 13, 2019)
- Episode 5x01: Event Horizon (Oct 6, 2019)
- Episode 4x22: The Quest for Peace (May 19, 2019)
- Episode 4x21: Red Dawn (May 12, 2019)
- Episode 4x20: Will the Real Miss Tessmacher Please Stand Up? (May 5, 2019)
- Episode 4x19: American Dreamer (Apr 28, 2019)
- Episode 4x18: Crime and Punishment (Apr 21, 2019)
- Episode 4x17: All About Eve (Mar 31, 2019)
- Episode 4x16: The House of L (Mar 24, 2019)
- Episode 4x15: O Brother, Where Art Thou? (Mar 17, 2019)
- Episode 4x14: Stand and Deliver (Mar 10, 2019)
- Episode 4x13: What's So Funny About Truth, Justice, and the American Way? (Mar 3, 2019)
- Episode 4x12: Menagerie (Feb 17, 2019)
- Episode 4x11: Blood Memory (Jan 27, 2019)
- Episode 4x10: Suspicious Minds (Jan 20, 2019)
- Episode 4x07: Rather the Fallen Angel (Nov 25, 2018)
- Episode 4x06: Call to Action (Nov 18, 2018)
- Episode 4x05: Parasite Lost (Nov 11, 2018)
- Episode 4x04: Ahimsa (Nov 4, 2018)
- Episode 4x03: Man of Steel (Oct 28, 2018)
- Episode 4x02: Fallout (Oct 21, 2018)
- Episode 4x01: The American Alien (Oct 14, 2018)
- Episode 3x23: Battles Lost and Won (Jun 18, 2018)
- Episode 3x22: Make It Reign (Jun 11, 2018)
- Episode 3x21: Not Kansas (Jun 4, 2018)
- Episode 3x20: Dark Side of the Moon (May 28, 2018)
- Episode 3x19: The Fanatical (May 21, 2018)
- Episode 3x18: Shelter from the Storm (May 14, 2018)
- Episode 3x17: Trinity (May 7, 2018)
- Episode 3x16: Of Two Minds (Apr 30, 2018)
- Episode 3x15: In Search of Lost Time (Apr 23, 2018)
- Episode 3x14: Schott Through the Heart (Apr 16, 2018)
- Episode 3x13: Both Sides Now (Feb 5, 2018)
- Episode 3x12: For Good (Jan 29, 2018)
- Episode 3x11: Fort Rozz (Jan 22, 2018)
- Episode 3x10: Legion of Super-Heroes (Jan 15, 2018)
- Episode 3x09: Reign (Dec 4, 2017)
- Episode 3x05: Damage (Nov 6, 2017)
- Episode 3x04: The Faithful (Oct 30, 2017)
- Episode 3x02: Triggers (Oct 16, 2017)
- Episode 3x01: Girl of Steel (Oct 9, 2017)
Guest starring as Lena Luthor
(12 episodes)
- Episode 2x22: Nevertheless, She Persisted (May 22, 2017)
- Episode 2x21: Resist (May 15, 2017)
- Episode 2x20: City of Lost Children (May 8, 2017)
- Episode 2x19: Alex (May 1, 2017)
- Episode 2x18: Ace Reporter (Apr 24, 2017)
- Episode 2x15: Exodus (Mar 6, 2017)
- Episode 2x12: Luthors (Feb 13, 2017)
- Episode 2x08: Medusa (Nov 28, 2016)
- Episode 2x05: Crossfire (Nov 7, 2016)
- Episode 2x04: Survivors (Oct 31, 2016)
- Episode 2x03: Welcome to Earth (Oct 24, 2016)
- Episode 2x01: The Adventures of Supergirl (Oct 10, 2016)
Guest starring as Elizabeth Walsh
(2 episodes)
- Episode 6x11: Mxy in the Middle (Sep 14, 2021) [Uncredited]
- Episode 5x06: Confidence Women (Nov 10, 2019) [Uncredited]
Dracula (2013)
Starring as Lucy Westenra
(10 episodes)
- Episode 1x10: Let There Be Light (Jan 24, 2014)
- Episode 1x09: Four Roses (Jan 17, 2014)
- Episode 1x08: Come to Die (Jan 10, 2014)
- Episode 1x07: Servant to Two Masters (Jan 3, 2014)
- Episode 1x06: Of Monsters and Men (Dec 6, 2013)
- Episode 1x05: The Devil's Waltz (Nov 29, 2013)
- Episode 1x04: From Darkness to Light (Nov 15, 2013)
- Episode 1x03: Goblin Merchant Men (Nov 8, 2013)
- Episode 1x02: A Whiff of Sulfur (Nov 1, 2013)
- Episode 1x01: The Blood is the Life (Oct 25, 2013)
Merlin (2008)
Starring as Morgana
(61 episodes)
- Episode 5x13: The Diamond of the Day: Part Two (Dec 24, 2012)
- Episode 5x12: The Diamond of the Day: Part One (Dec 22, 2012)
- Episode 5x11: The Drawing of the Dark (Dec 15, 2012)
- Episode 5x10: The Kindness of Strangers (Dec 8, 2012)
- Episode 5x09: With All My Heart (Dec 1, 2012)
- Episode 5x08: The Hollow Queen (Nov 24, 2012)
- Episode 5x07: A Lesson in Vengeance (Nov 17, 2012)
- Episode 5x06: The Dark Tower (Nov 10, 2012)
- Episode 5x04: Another's Sorrow (Oct 27, 2012)
- Episode 5x03: The Death Song of Uther Pendragon (Oct 20, 2012)
- Episode 5x02: Arthur's Bane: Part Two (Oct 13, 2012)
- Episode 5x01: Arthur's Bane: Part One (Oct 6, 2012)
- Episode 4x13: The Sword in the Stone: Part Two (Dec 24, 2011)
- Episode 4x12: The Sword in the Stone: Part One (Dec 17, 2011)
- Episode 4x11: The Hunter's Heart (Dec 10, 2011)
- Episode 4x09: Lancelot Du Lac (Nov 26, 2011)
- Episode 4x08: Lamia (Nov 19, 2011)
- Episode 4x07: The Secret Sharer (Nov 12, 2011)
- Episode 4x06: A Servant of Two Masters (Nov 5, 2011)
- Episode 4x05: His Father's Son (Oct 29, 2011)
- Episode 4x04: Aithusa (Oct 22, 2011)
- Episode 4x03: The Wicked Day (Oct 15, 2011)
- Episode 4x02: The Darkest Hour: Part Two (Oct 8, 2011)
- Episode 4x01: The Darkest Hour: Part One (Oct 1, 2011)
- Episode 3x13: The Coming of Arthur: Part Two (Dec 4, 2010)
- Episode 3x12: The Coming of Arthur: Part One (Nov 27, 2010)
- Episode 3x11: The Sorcerer's Shadow (Nov 20, 2010)
- Episode 3x10: Queen of Hearts (Nov 13, 2010)
- Episode 3x08: The Eye of the Phoenix (Oct 30, 2010)
- Episode 3x07: The Castle of Fyrien (Oct 23, 2010)
- Episode 3x06: The Changeling (Oct 16, 2010)
- Episode 3x05: The Crystal Cave (Oct 9, 2010)
- Episode 3x04: Gwaine (Oct 2, 2010)
- Episode 3x03: Goblin's Gold (Sep 25, 2010)
- Episode 3x02: The Tears of Uther Pendragon: Part Two (Sep 18, 2010)
- Episode 3x01: The Tears of Uther Pendragon: Part One (Sep 11, 2010)
- Episode 2x12: The Fires of Idirsholas (Dec 12, 2009)
- Episode 2x11: The Witch's Quickening (Dec 5, 2009)
- Episode 2x10: Sweet Dreams (Nov 28, 2009)
- Episode 2x09: The Lady of the Lake (Nov 21, 2009)
- Episode 2x08: The Sins of the Father (Nov 14, 2009)
- Episode 2x07: The Witchfinder (Nov 7, 2009)
- Episode 2x06: Beauty and the Beast: Part Two (Oct 31, 2009)
- Episode 2x05: Beauty and the Beast: Part One (Oct 24, 2009)
- Episode 2x04: Lancelot and Guinevere (Oct 10, 2009)
- Episode 2x03: The Nightmare Begins (Oct 3, 2009)
- Episode 2x02: The Once and Future Queen (Sep 26, 2009)
- Episode 2x01: The Curse of Cornelius Sigan (Sep 19, 2009)
- Episode 1x13: Le Morte d'Arthur (Dec 13, 2008)
- Episode 1x12: To Kill the King (Dec 6, 2008)
- Episode 1x11: The Labyrinth of Gedref (Nov 29, 2008)
- Episode 1x10: The Moment of Truth (Nov 22, 2008)
- Episode 1x09: Excalibur (Nov 15, 2008)
- Episode 1x08: The Beginning of the End (Nov 8, 2008)
- Episode 1x07: The Gates of Avalon (Nov 1, 2008)
- Episode 1x06: A Remedy to Cure All Ills (Oct 25, 2008)
- Episode 1x05: Lancelot (Oct 18, 2008)
- Episode 1x04: The Poisoned Chalice (Oct 11, 2008)
- Episode 1x03: The Mark of Nimueh (Oct 4, 2008)
- Episode 1x02: Valiant (Sep 27, 2008)
- Episode 1x01: The Dragon's Call (Sep 20, 2008)