Arthur Campbell
(Peter Gallagher)
Arthur is the director of the Clandestine Service Department at the CIA. A regal and imposing presence, he loves a good fight whether it's with a known enemy of the United States or verbal sparring with his own wife, Joan, who also works at the Agency. But his bid to bring more transparency to the CIA is at odds with the very covert nature of the organization. Arthur has his supporters but not everyone's on his side, whether they'll admit to it or not. He's in for an uphill battle that's sure to have its casualties.