Katherine McNamara: Katherine McNamara. Actress: Shadowhunters. Katherine McNamara, named one of Vanity Fair's "Breakout Bunch," is a sought after accomplished actor, dancer, singer/songwriter. She is most recently known as the titular lead role of "Abby Walker" in Walker: Independence (2022), the prequel to CW's Walker (2021). In 2023, Katherine was nominated for the Critics Choice Association's Super Award for Best Actress in an Action Series. Before she went West, she was cast...