Katie McGuinness is an actress whose career began in the 2004 miniseries He Knew He Was Right. That same year, she also appeared in the TV film Dirty Filthy Love. Later in 2007, she had her first movie role, co-starring in the movie Bombil and Beatrice. In the 2010s, she landed guest roles in The Borgias, Inspector Lewis, and Doctors. She later guest-starred in Stan Lee’s Lucky Man and appeared in 2 episodes of the miniseries Roots. In 2017, she had a role in the feature film The Man Who Invented Christmas. She currently stars as Josie Wellstead in the new series Snowpiercer.