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.
The internet can't get enough of Area 51 -- and 'Project Blue Book' is here for it ... The series, starring Aidan Gillen and Michael Malarkey, will air its season one finale on Feb. 26.