Charles Aitken is a British-American actor. He started his career as Tim Barker in the TV series Bonkers back in 2007. Later in 2010, he made his cinematic debut in the film As You Like It. He next appeared in the TV film The Lady Vanishes, as well as guest-starred in an episode of Foyle’s War. More recently, he played William in 2 episodes of the CBS series Madam Secretary. He later became known for his role as Henry Robertson in the Cinemax series The Knick, which he starred in from 2014 to 2015. Aitken then had performances in the movies The Girl on the Train, Happy Death Day, Summertime, and Happy Death Day 2U.