
William Devane
Acting
🎂 1939-09-05
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.
Cast credits(110)

Nicolas Mason
2003

President Hayes
1997

James Heller
2001

Williams
2014

Self
1962

General Mark Suveg
1993

Peters
2006

Lewis Berryhill
1999

Greg Sumner
1979

Whitney Vance
2022

Al Kordic
1967

President
2012

Edward Grayson
2011

Al Capone
1993

Moss Stratton
1955

Benjamin Parker
1994

Dr. Ray Waltham
1969

Bernie Hobson
1996

Dr. Kramer
2000

Carter
1999

President Henry Hayes
2008

Eugene Davis
2000

William Devane
1995

Dean Sanderson Sr.
2015
Alan Beckett
2009

Capt. Bob Pearson
1995

Black Jack Bouvier
1991

Janeway
1976

The Lawyer
1971

Gen. Hodges (voice) (uncredited)
2015

Lou Della Rosa
1993

Billy Crumb
2006

Mike Leak
1977

Arthur Adamson
1976

Elliot McSwain
1992

Dr. Dix
2006

Dutch Hines
2010
Frank Carson
2009

Dr. Dix
2015
Dr. Richard Ofshe
1996

Jock Fenner
1971

Brady McKay
2000

Scott McKenzie
1987

Big Red
2014

Everett Morgan Gray
2011

Cal Brennan
2003

Sheriff Jim Metts
1991

David Prine
1973

Harry Langford
1981

Dr. Dix
2012

Dr. Dix
2007

Ed Bledsoe
1992

John Manly
1978

John
1979

John Henry Faulk
1975

Alex Brandt
1990

Mayor Kirby T. Calo
1981

Sgt. Milt Warden
1979

Lt. Barrett
1994

Roger Thornhill
2001

Major Charles Rane
1977

The Judge
2002

Sergeant Joseph Turk
1999

Col. Charnley
1990

Tom
1994

1974

Dr. Harbuck
1995

Grove McCarthy
2004

Dr. Chatham
1990

Asst. D.A. Jackson
1975

Dr. Dix
2010

Col. Weldon
2002

Nick Caldwell
1995

Dr. Dix
2011

LT. Ashley
1972

Ron Lake
2000

Pop O'Hara
2012

Jack Litman
1989

Dr. Dix
2009

Maj. Phil Clark
1981

Sen. Emmett Hunter
1997

judge Stanley Seeban
2009

Tom Kincaid
2001

1995

Pilot
1971

Lawrence Kellerman
1997

George Boyajian
2002

Greg Sumner
1997

Older Sam Ryan
2000

Kilburn
1973

Tom Wetherly
1983

Aaron Charney
1984

William Quinn
1983

Harry Orwitz
1993

President John F. Kennedy
1974

Jimmy Pilgrim
1971

Daniel 'Dan' Fields
1993

Self
2001

Roy Warner, aka Steve Dupree
1979

John F. Kennedy - US President
1974

1967

Leonard Doc Blach
2014

Thompson
2010

Earl Stokey
1973

Frank Brolen
1977

Tom
1971

Jake
2011

Coach Ball
1983
Dr. Karl Sorenson
1997

Host & Narrator
1992