Katherine McNamara (born November 22, 1995) is an American actress. She portrayed Clary Fray on the 2016–2019 supernatural drama television series Shadowhunters, receiving a Teen Choice Award and a People's Choice Award for her work. Since 2022, she has starred in the western action series Walker: Independence as Abby Walker, which earned her a Critics Choice Super Award for Best Actress in an Action Series nomination. She also portrayed Mia Smoak in the superhero series Arrow and starred as Julie Lawry in the post-apocalyptic miniseries The Stand. Her film roles include Lily Bowman in the 2011 romantic comedy New Year's Eve, Rosa in the 2015 drama A Sort of Homecoming, Sonya in the dystopian science fiction film series Maze Runner, and Amy in the 2021 thriller Trust.