Liam Neeson
Mark Felt
Diane Lane
Audrey Felt
Maika Monroe
Joan Felt
Wendi McLendon-Covey
Carol Tschudy
Julian Morris
Bob Woodward
Josh Lucas
Charlie Bates
Tony Goldwyn
Ed Miller
Kate Walsh
Pat Miller
Michael C. Hall
John Dean
Marton Csokas
Pat Gray
Tom Sizemore
Bill Sullivan
Ike Barinholtz
Angelo Lano
Bruce Greenwood
Sandy Smith
Brian d'Arcy James
Robert Kunkel
Noah Wyle
Stan Pottinger
Eddie Marsan
Agency Man
Wayne Pére
John Ehrlichman
Stephen Michael Ayers
John Mitchell
Darryl Cox
Richard Kleindienst
Scott Poythress
Gray's Flack
Jeff Sprauve
Undercover Agent
Frank Hoyt Taylor
Senator #1
Charles Green
Reverend
Michael Crider
Senator #2
John Chancellor
Self (archive footage) (uncredited)
Walter Cronkite
Self (archive footage) (uncredited)
Richard Nixon
Self (archive footage) (uncredited)
Pat Nixon
Self (archive footage) (uncredited)
Jessica Young
Joan's Friend