Tom Ellis revealed why he didn't watch most of FBI before filming his new spinoff CIA. "To start with, I certainly wanted to keep it separate because it is a very different agency and they run very differently and they operate very differently," Ellis, 47, exclusively told Us Weekly before the Monday, February 23, premiere. "The fun of the clash actually plays out better the less I know about FBI and what they do." Ellis "watched a little bit" before pressing pause. "Obviously, I've been aware of the shows and of the Dick Wolf TV kingdom for years and years and years.