At a young age Mason landed his first theater role in the play "The Children of Heracles" directed by Peter Sellars at the American Repertory Theater (ART) at Harvard -- an Athenian tragedy, that follows the children of Heracles as they seek protection from Eurystheus. This fueled Mason's passion for acting and writing and theater became a therapeutic vehicle for self creation. Mason graduated from Emerson College in 2011, where he studied film and acting. At Emerson he was nominated for the EVVY'S for best actor two years in a row, winning best actor portraying a handicapped soldier disillusioned by war. Following his graduation from Emerson, he traveled the Latin American countries, Europe, and Africa where he took up interests in ethnography and anthropology. Reading and performing plays whenever possible. Upon his return to the United States, he pursued acting professionally in Los Angeles where he was cast in the CBS show "Person of Interest." In 2016, Mason was handpicked by Academy Award Winning Director, Kathryn Bigelow in a supporting role in the film "Detroit." Mason has since landed other supporting roles and is a recurring actor in the Showtime series "Ray Donovan." In 2019, Mason concluded a role along Soairse Ronan and Louis Garrel in Greta Gerwig's adaptation of "Little Women," which was nominated for Best Picture.