Katherine McNamara is an American actress. She portrayed Clary Fray on the 2016–2019 supernatural drama series Shadowhunters, receiving a Teen Choice Award and a People's Choice Award for her work. In 2022, she 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.

Shadowhunters, also known as Shadowhunters: The Mortal Instruments, is an American supernatural drama television series developed by Ed Decter, based on the novel series The Mortal Instruments written by Cassandra Clare. It premiered in North America on Freeform on January 12, 2016. Primarily filmed in Toronto, Canada, the series follows Clary Fray, who finds out on her eighteenth birthday that she comes from a long line of Shadowhunters, human-angel hybrids who hunt down demons, and has to deal with the struggle of forbidden love.