Ruben Santiago-Hudson is an actor, writer and producer who guest starred as Morris Tolliver on the episode Post Hoc, Ergo Propter Hoc. He won Humanitas Prize and was nominated for Emmy and Writers Guild of America Awards for the autobiographical TV Movie Lackawanna Blues. He was the first Special Guest Star to appear on The West Wing. He later had a major role in the first three seasons of Castle as Captain Roy Montgomery.

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