Katheryn Winnick. Actress: Vikings. Award-winning actress, director, producer, Katheryn Winnick, is best known for starring and directing the critically acclaimed, Emmy award-winning television series "Vikings." Winnick made her directorial debut in sixth and final season which earned her "Best Director" at the 2020 WIN Awards. She produced and starred in Sean Penn's "Flag Day" that premiered at the 2021 Cannes Film Festival and recently starred in David E. Kelley's critically...