Ruben Santiago-Hudson is an American actor, playwright, and director who has won national awards for his work in all three categories. He is best known for his role of Captain Roy Montgomery from 2009 to 2011 on ABC's Castle. In November 2011, he appeared on Broadway in Lydia R. Diamond's play Stick Fly. In 2013, he starred in the TV series Low Winter Sun, a police drama set in Detroit. From Wikipedia
