
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)

Self
1962

Nicolas Mason
2003

Benjamin Parker
1994

President Hayes
1997

General Mark Suveg
1993

Peters
2006

Al Kordic
1967

Al Capone
1993

James Heller
2001

Dr. Ray Waltham
1969

Greg Sumner
1979

Edward Grayson
2011

Lewis Berryhill
1999

Whitney Vance
2022

Williams
2014

David Prine
1973

Black Jack Bouvier
1991

Lou Della Rosa
1993

Sgt. Milt Warden
1979

Moss Stratton
1955

President
2012

Bernie Hobson
1996

William Devane
1995

2006

Sergeant Joseph Turk
1999

Greg Sumner
1997

1995

Dean Sanderson Sr.
2015

Dr. Kramer
2000

Carter
1999

Brady McKay
2000

Janeway
1976

President Henry Hayes
2008

Gen. Hodges (voice) (uncredited)
2015

Eugene Davis
2000

John Manly
1978

Major Charles Rane
1977

Tom Kincaid
2001

Arthur Adamson
1976

The Lawyer
1971

Dr. Dix
2015

John F. Kennedy - US President
1974

Thompson
2010

Dr. Dix
2006

Cal Brennan
2003

Capt. Bob Pearson
1995

Dr. Harbuck
1995

The Judge
2002

John
1979

Jack Litman
1989

Dr. Dix
2011

Tom Wetherly
1983

Roy Warner, aka Steve Dupree
1979

Dr. Dix
2010

Dutch Hines
2010

Dr. Dix
2007

Leonard Doc Blach
2014

Dr. Dix
2012

Nick Caldwell
1995

Tom
1994

Mayor Kirby T. Calo
1981

Dr. Dix
2009

Mike Leak
1977

Jock Fenner
1971

Dr. Chatham
1990

Everett Morgan Gray
2011

Big Red
2014

Asst. D.A. Jackson
1975

Pop O'Hara
2012

Pilot
1971

Scott McKenzie
1987

Ron Lake
2000
Dr. Richard Ofshe
1996

Roger Thornhill
2001

Ed Bledsoe
1992
Alan Beckett
2009

Maj. Phil Clark
1981

Daniel 'Dan' Fields
1993

George Boyajian
2002

Grove McCarthy
2004

Aaron Charney
1984

Harry Langford
1981

President John F. Kennedy
1974

Earl Stokey
1973
Frank Carson
2009

Coach Ball
1983

LT. Ashley
1972

Lt. Barrett
1994

John Henry Faulk
1975

Frank Brolen
1977

Alex Brandt
1990

1974

Col. Charnley
1990

William Quinn
1983

Harry Orwitz
1993

Self
2001

Jimmy Pilgrim
1971

Sen. Emmett Hunter
1997

Sheriff Jim Metts
1991

Lawrence Kellerman
1997

1967

judge Stanley Seeban
2009

Elliot McSwain
1992

Older Sam Ryan
2000

Host & Narrator
1992

Kilburn
1973
Dr. Karl Sorenson
1997

Tom
1971

Col. Weldon
2002

Jake
2011