1. Katie McGrath is an Irish actress known for several television series: portraying Morgana Pendragon in BBC One's Merlin, Lucy Westenra on the British-American series Dracula, Saskia in the TV series Secret Bridesmaids Business, Sarah Bennett in the first season of the horror anthology series Slasher, and for her role as Lena Luthor on the superhero series Supergirl.
Katie McGrath has two older brothers, Sean, an online media manager, and Rory, who is a post-production producer.
Katie McGrath studied the International Baccalaureate at St Andrew's College before graduating from Trinity College, Dublin, with a degree in history with a focus on Russian history.
Katie McGrath originally sought to work in fashion journalism and took on a job at Image magazine before becoming a wardrobe assistant on the set of The Tudors.
Katie McGrath was cast in Damage, an Irish TV-movie in 2007.
Katie McGrath starred in the play La Marea at the Dublin Theatre Festival in the same year.
Katie McGrath appeared in the feature films Eden and Freakdog in 2008, before being cast as Morgana Pendragon in Merlin.
In 2009, Katie McGrath starred in a five-part docudrama for Channel 4 exploring the life of Queen Elizabeth II, The Queen, in which she played a young Princess Margaret.
Emilia Fox portrayed Elizabeth II in the same episode in which Katie McGrath appeared; the two had previously worked together as sisters Morgause and Morgana in Merlin.
Katie McGrath played Lady Furness, the king's former mistress who introduces him to Wallis Simpson.
In 2011, Katie McGrath appeared with Roger Moore in the comedy-drama film A Princess for Christmas, a Hallmark Channel Original Movie shot mainly at the Peles Castle in Romania.
In September 2011, Katie McGrath voice-acted the characters in the Irish animated short film Trid an Stoirm.
Later that month, Katie McGrath was cast as Oriane Congost in Labyrinth.
Katie McGrath was reunited with her The Tudors co-star and close friend Jonathan Rhys Meyers in NBC and Sky Living's horror drama TV series Dracula; she portrayed Lucy Westenra.
In June 2013, Katie McGrath co-starred in episode four of the Channel 4 show Dates as a young lesbian on the dating scene alongside Gemma Chan.
In November 2014, Katie McGrath co-starred in a Hozier music video for the song "From Eden".
In 2015, Katie McGrath had a supporting role as Zara in the film Jurassic World and starred in the Crackle original spy-thriller, The Throwaways.
Katie McGrath portrayed the lead role in the first season of Chiller's original horror series Slasher, which premiered on 4 March 2016.
Katie McGrath debuted in the season two premiere episode titled "The Adventures of Supergirl" and was promoted to a series regular in March 2017 and maintained this role until the show's end in 2021.
Katie McGrath appeared as Elsa in Guy Ritchie's fantasy film King Arthur: Legend of the Sword, which was released in May 2017.
In 2019, Katie McGrath starred alongside Abbie Cornish and Georgina Haig in Seven Network series Secret Bridesmaids' Business, about how a bride's wedding turns deadly after one of the bridesmaids invites a stranger into their lives.
Katie McGrath starred as Saskia, a bisexual lawyer who is described as an intelligent, loyal woman who is holding a secret.