
William Devane
William Joseph Devane (born September 5, 1937) is an American film, television and theater actor, known for his role as Greg Sumner on the primetime soap opera Knots Landing and as James Heller on the Fox serial drama 24, the role he reprised in Live Another Day. He is also known for his supporting roles in films such as McCabe & Mrs. Miller, Family Plot), Marathon Man, Rolling Thunder and Space Cowboys.
Devane began his acting career with the New York Shakespeare Festival where he performed in 15 plays. In 1966, Devane portrayed Robert F. Kennedy in the Off-Broadway spoof MacBird. He gained acclaim for his role as President John F. Kennedy in a television docudrama about the Cuban Missile Crisis, The Missiles of October, and again when he played blacklisted radio personality John Henry Faulk in the Emmy Award-winning TV movie Fear on Trial. He is widely known for his ten years as the ambitious and hardnosed politician-turned-corporate titan Greg Sumner on Knots Landing.
In 1994, Devane appeared as Al Capone in Lois & Clark: The New Adventures of Superman in an episode entitled "That Old Gang of Mine". He also had a recurring role on the CBS show Early Edition as the lead character's father. Devane appeared in the films McCabe & Mrs. Miller; Lady Liberty; Family Plot; Marathon Man; Rolling Thunder; Yanks; Testament; Timestalkers; Forgotten Sins; Exception to the Rule; Payback; Hollow Man and Space Cowboys.
Devane has played members of the Presidential Cabinet on two evening dramas. In 2004, on The West Wing, he guest-starred as the Secretary of State and potential Vice-Presidential nominee. Devane appeared in several scenes with Martin Sheen; they also appeared together as President John F. Kennedy and his brother Robert, respectively, 30 years earlier in The Missiles of October. In 2005, he joined the cast of 24 as Secretary of Defense James Heller for seasons 4, 5 and 6.
Known For









Credits
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Bosch: Legacy 2022Whitney Vance★ 8
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Dr. Dix★ 6.5
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Truth 2015Gen. Hodges (voice) (uncredited)★ 6.5
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The Grinder 2015Dean Sanderson Sr.★ 6.7
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Interstellar 2014Williams★ 8.5
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Bad Turn Worse 2014Big Red★ 5.5
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50 to 1 2014Leonard Doc Blach★ 6.6
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President★ 7.8
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Dr. Dix★ 6.8
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Leprechaun's Revenge 2012Pop O'Hara★ 5.2
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Good Morning, Killer 2011Everett Morgan Gray★ 5.2
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Flag of My Father 2011Jake★ 6
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Revenge 2011Edward Grayson★ 7.6
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Dr. Dix★ 6.4
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Thompson★ 5.1
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Dr. Dix★ 6.8
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The River Why 2010Dutch Hines★ 5.3
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The Fall 2009judge Stanley Seeban★ 4
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Dr. Dix★ 6.8
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The Least Among You 2009Alan Beckett★ 5
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The Dealership 2009Frank Carson★ NR
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Stargate: Continuum 2008President Henry Hayes★ 7.1
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Dr. Dix★ 6.9
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Psych 2006Peters★ 7.9
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Dr. Dix★ 6.9
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Crumbs 2006★ 5.8
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Deceit 2004Grove McCarthy★ 3.7
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NCIS 2003Nicolas Mason★ 7.6
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Monte Walsh 2003Cal Brennan★ 6.1
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A Christmas Visitor 2002George Boyajian★ 5.3
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Threat of Exposure 2002Col. Weldon★ 5.3
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The Badge 2002The Judge★ 5.9
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24 2001James Heller★ 7.8
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Race to Space 2001Roger Thornhill★ 5.9
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Tom Kincaid★ 4.3
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Self★ 6.2
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Poor White Trash 2000Ron Lake★ 4.2
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Brady McKay★ 4.5
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Space Cowboys 2000Eugene Davis★ 6.4
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Hollow Man 2000Dr. Kramer★ 5.9
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Older Sam Ryan★ 5.3
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The West Wing 1999Lewis Berryhill★ 8.3
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Payback 1999Carter★ 6.8
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Turks 1999Sergeant Joseph Turk★ 7.3
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Doomsday Rock 1997Dr. Karl Sorenson★ 4.7
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Stargate SG-1 1997President Hayes★ 8.3
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Greg Sumner★ 9
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The Absolute Truth 1997Sen. Emmett Hunter★ 5
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King of the Hill 1997Chuck Garrison (voice)★ 7.3
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Lawrence Kellerman★ 3.8
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Forgotten Sins 1996Dr. Richard Ofshe★ 2
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Freefall: Flight 174 1995Capt. Bob Pearson★ 5.5
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Night Watch 1995Nick Caldwell★ 4.5
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The Monroes 1995★ NR
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Virus 1995Dr. Harbuck★ 4.6
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Hope and Gloria 1995William Devane★ 5
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Lady in Waiting 1994Lt. Barrett★ 3.4
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Tom★ 6.8
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Touched by an Angel 1994Benjamin Parker★ 7.2
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Rubdown 1993Harry Orwitz★ 1
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Phenom 1993Lou Della Rosa★ 4.8
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Al Capone★ 7
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The X-Files 1993General Mark Suveg★ 8.4
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Daniel 'Dan' Fields★ 5.4
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Elliot McSwain★ NR
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Obsessed 1992Ed Bledsoe★ 5.9
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Host & Narrator★ NR
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Sheriff Jim Metts★ 6
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A Woman Named Jackie 1991Black Jack Bouvier★ 9.2
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Murder C.O.D. 1990Alex Brandt★ 6.8
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Vital Signs 1990Dr. Chatham★ 4.9
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Chips, the War Dog 1990Col. Charnley★ 8.5
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The Preppie Murder 1989Jack Litman★ 6
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Timestalkers 1987Scott McKenzie★ 5.3
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With Intent to Kill 1984Aaron Charney★ 3
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Testament 1983Tom Wetherly★ 6.4
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Hadley's Rebellion 1983Coach Ball★ 4
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Jane Doe 1983William Quinn★ 6
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The Other Victim 1981Harry Langford★ NR
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Maj. Phil Clark★ 4
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Honky Tonk Freeway 1981Mayor Kirby T. Calo★ 5.2
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Knots Landing 1979Greg Sumner★ 6.7
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Yanks 1979John★ 6
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The Dark 1979Roy Warner, aka Steve Dupree★ 4.6
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Sgt. Milt Warden★ 6.5
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Black Beauty 1978John Manly★ 7
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Rolling Thunder 1977Major Charles Rane★ 6.8
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Mike Leak★ 5.8
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Red Alert 1977Frank Brolen★ 4
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Marathon Man 1976Janeway★ 7.2
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Family Plot 1976Arthur Adamson★ 6.7
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Fear on Trial 1975John Henry Faulk★ 9
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Asst. D.A. Jackson★ 6.8
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President John F. Kennedy★ 7.5
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The Snoop Sisters 1973David Prine★ 7.2
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The Bait 1973Earl Stokey★ 6.4
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Crime Club 1973Kilburn★ NR
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LT. Ashley★ 3
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Lady Liberty 1971Jock Fenner★ 5.5
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My Old Man's Place 1971Jimmy Pilgrim★ 6.8
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McCabe & Mrs. Miller 1971The Lawyer★ 7.2
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The 300-Year Weekend 1971Tom★ 2
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Pilot★ 6.3
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Medical Center 1969Dr. Ray Waltham★ 6.1
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Mannix 1967Al Kordic★ 6.7
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In the Country 1967★ 6
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Gunsmoke 1955Moss Stratton★ 6.6