Actor Aidan Gillen had akey role on one of the most important television series of all time—Game of Thrones. Now he's on a new show, Project Blue Book. Gillen stars on the series as Dr. J.

Warner Bros. has officially enlisted Joe Alwyn (The Favourite), Aidan Gillen (Game of Thrones), Ben Chaplin (September 5), Naledi Murray (Sweet Tooth), and Sebastian Orozco (The Crow) to join the ...