Born in Buffalo, New York, William Sadler earned his master's degree in acting from Cornell University. He worked a variety of jobs before moving to New York, which was the beginning of twelve years and over 75 productions on Broadway. He first appeared on the small screen in a 1977 episode of The CBS Festival of Lively Arts for Young People, followed by the role of Dieter Schmidt in the 1978 movie The Great Wlllendas.
Known For
Credits
Cast Credits
Full Circle (2023)
Guest starring as Gene McCusker
(4 episodes)
- Episode 1x06: Essequibo (Jul 27, 2023)
- Episode 1x05: Loyalty (Jul 27, 2023)
- Episode 1x04: Safe in the Circle (Jul 20, 2023)
- Episode 1x03: Jared's Body (Jul 20, 2023)
God Friended Me (2018)
Guest starring as Reverend Elias
(2 episodes)
- Episode 2x17: Harlem Cinema House (Mar 15, 2020)
- Episode 2x09: Prophet & Loss (Nov 24, 2019)
The Good Fight (2017)
Guest starring as Judge Nilsson
- Episode 6x06: The End of a Saturday (Oct 13, 2022)
Berlin Station (2016)
Guest starring as Clay Williams
(4 episodes)
- Episode 1x10: Oratorio Berlin (Dec 18, 2016)
- Episode 1x09: Thomas Shaw (Dec 11, 2016)
- Episode 1x08: False Negative (Dec 4, 2016)
- Episode 1x07: Proof of Life (Nov 27, 2016)
Day 5 (2016)
Starring as Bob
(4 episodes)
- Episode 2x07: Apnea (Sep 17, 2017)
- Episode 2x06: Parasomnia (Sep 10, 2017)
- Episode 2x05: Sleepwalkers (Sep 3, 2017)
- Episode 2x04: Circadian Rhythms (Aug 27, 2017)
Madam Secretary (2014)
Guest starring as George Peters
(2 episodes)
- Episode 1x22: There But for the Grace of God (May 3, 2015)
- Episode 1x01: Pilot (Sep 21, 2014)
Power (2014)
Starring as Tony Teresi
(19 episodes)
- Episode 5x10: When This Is Over (Sep 9, 2018)
- Episode 5x09: There's a Snitch Among Us (Sep 2, 2018)
- Episode 5x08: A Friend of the Family (Aug 26, 2018)
- Episode 5x07: The Devil Inside (Aug 12, 2018)
- Episode 5x06: A Changed Man? (Aug 5, 2018)
- Episode 5x05: Happy Birthday (Jul 29, 2018)
- Episode 5x04: Second Chances (Jul 22, 2018)
- Episode 5x03: Are We on the Same Team? (Jul 15, 2018)
- Episode 5x02: Damage Control (Jul 8, 2018)
- Episode 5x01: Everyone Is Implicated (Jul 1, 2018)
- Episode 4x10: You Can't Fix This (Sep 3, 2017)
- Episode 4x09: That Ain't Me (Aug 20, 2017)
- Episode 4x08: It's Done (Aug 13, 2017)
- Episode 4x07: You Lied to My Face (Aug 6, 2017)
- Episode 4x06: New Man (Jul 30, 2017)
- Episode 4x05: Don't Thank Me (Jul 23, 2017)
- Episode 4x04: We're in This Together (Jul 16, 2017)
- Episode 4x03: The Kind of Man You Are (Jul 9, 2017)
- Episode 4x02: Things Are Going to Get Worse (Jul 2, 2017)
Marvel's Agents of S.H.I.E.L.D. (2013)
Guest starring as President Matthew Ellis
(3 episodes)
- Episode 3x13: Parting Shot (Mar 22, 2016)
- Episode 3x11: Bouncing Back (Mar 8, 2016)
- Episode 3x01: Laws of Nature (Sep 29, 2015)
The Blacklist (2013)
Guest starring as Sam Milhoan
(3 episodes)
- Episode 6x19: Rassvet (Apr 26, 2019)
- Episode 4x17: Requiem (Apr 20, 2017)
- Episode 1x08: General Ludd (No. 109) (Nov 11, 2013)
Golden Boy (2013)
Guest starring as Commissioner Jack Dowdell
(2 episodes)
- Episode 1x13: Next Question (May 14, 2013)
- Episode 1x04: Role Models (Mar 12, 2013)
666 Park Avenue (2012)
Guest starring as Nate McKenny
(2 episodes)
- Episode 1x13: Lazarus: Part 1 (Jul 13, 2013)
- Episode 1x12: The Elysian Fields (Jul 6, 2013)
Homeland (2011)
Guest starring as Mike Higgins
(3 episodes)
- Episode 3x10: Good Night (Dec 1, 2013)
- Episode 3x08: A Red Wheelbarrow (Nov 17, 2013)
- Episode 3x05: The Yoga Play (Oct 27, 2013)
Blue Bloods (2010)
Guest starring as Armin Janko
(2 episodes)
- Episode 9x21: Identity (May 3, 2019)
- Episode 6x02: Absolute Power (Oct 2, 2015)
Hawaii Five-0 (2010)
Guest starring as John McGarrett
(8 episodes)
- Episode 10x22: Aloha (Apr 3, 2020)
- Episode 5x07: Ina Paha (Nov 7, 2014)
- Episode 5x05: Ho'oilina (Oct 24, 2014)
- Episode 4x13: Hana Lokomaika'i (Jan 17, 2014)
- Episode 3x15: Hookman (Feb 4, 2013)
- Episode 2x14: Pu'olo (Jan 16, 2012)
- Episode 2x01: Ha'i'ole (Sep 19, 2011)
- Episode 1x01: Pailaka (Sep 20, 2010)
Chase (2010)
Guest starring as William Frost
(2 episodes)
- Episode 1x18: Annie (May 21, 2011)
- Episode 1x17: The Man at the Altar (May 14, 2011)
The Pacific (2010)
Starring as Lieutenant Colonel Lewis "Chesty" Puller
(4 episodes)
- Episode 1x07: Part Seven (Apr 25, 2010)
- Episode 1x03: Part Three (Mar 28, 2010)
- Episode 1x02: Part Two (Mar 21, 2010)
- Episode 1x01: Part One (Mar 14, 2010)
White Collar (2009)
Guest starring as Brett Gelles
- Episode 3x02: Where There's a Will (Jun 14, 2011)
Mercy (2009)
Guest starring as Ret. Col. Nate Ramsey
(2 episodes)
- Episode 1x22: That Crazy Bitch Was Right (May 12, 2010)
- Episode 1x21: Too Much Attitude and Not Enough Underwear (May 5, 2010)
Fringe (2008)
Guest starring as Dr. Bruce Sumner
(2 episodes)
- Episode 4x03: Alone in the World (Oct 7, 2011)
- Episode 1x08: The Equation (Nov 18, 2008)
Damages (2007)
Guest starring as Helmut Torben
(6 episodes)
- Episode 5x10: But You Don't Do That Anymore (Sep 12, 2012)
- Episode 5x09: I Like Your Chair (Sep 5, 2012)
- Episode 5x08: I'm Afraid of What I'll Find (Aug 29, 2012)
- Episode 5x07: The Storm's Moving In (Aug 22, 2012)
- Episode 5x04: I Love You, Mommy (Aug 1, 2012)
- Episode 5x03: Failure Is Failure (Jul 25, 2012)
Traveler (2007)
Starring as Carlton Fog
(8 episodes)
- Episode 1x08: The Exchange (Jul 18, 2007)
- Episode 1x07: The Reunion (Jul 11, 2007)
- Episode 1x06: The Trader (Jun 27, 2007)
- Episode 1x05: The Tells (Jun 20, 2007)
- Episode 1x04: The Out (Jun 13, 2007)
- Episode 1x03: New Haven (Jun 6, 2007)
- Episode 1x02: The Retreat (May 30, 2007)
- Episode 1x01: Pilot (May 10, 2007)
Guest starring as Carlton Fog
- Episode 1x01: Pilot (May 10, 2007)
Wonderfalls (2004)
Starring as Dr. Darrin Tyler
(10 episodes)
- Episode 1x13: Caged Bird (Dec 27, 2004)
- Episode 1x11: Cocktail Bunny (Dec 13, 2004)
- Episode 1x10: Lying Pig (Dec 6, 2004)
- Episode 1x08: Muffin Buffalo (Nov 22, 2004)
- Episode 1x06: Barrel Bear (Nov 8, 2004)
- Episode 1x05: Crime Dog (Nov 1, 2004)
- Episode 1x04: Pink Flamingos (Oct 25, 2004)
- Episode 1x03: Wound-Up Penguin (Oct 18, 2004)
- Episode 1x02: Karma Chameleon (Oct 11, 2004)
- Episode 1x01: Wax Lion (Oct 4, 2004)
Law & Order: Criminal Intent (2001)
Guest starring as Kyle Devlin
- Episode 2x21: Graansha (May 11, 2003)
CSI: Crime Scene Investigation (2000)
Guest starring as Karl Cooper
- Episode 6x14: Killer (Feb 2, 2006)
Roswell (1999)
Starring as Sheriff James "Jim" Valenti
(45 episodes)
- Episode 3x18: Graduation (May 14, 2002)
- Episode 3x17: Four Aliens and a Baby (May 7, 2002)
- Episode 3x14: Chant Down Babylon (Feb 26, 2002)
- Episode 3x13: Panacea (Feb 12, 2002)
- Episode 3x12: Ch-Ch-Changes (Feb 5, 2002)
- Episode 3x10: A Tale of Two Parties (Jan 1, 2002)
- Episode 3x09: Samuel Rising (Dec 18, 2001)
- Episode 3x07: Interruptus (Nov 20, 2001)
- Episode 3x06: To Have and To Hold (Nov 13, 2001)
- Episode 3x04: Secrets and Lies (Oct 30, 2001)
- Episode 3x02: Michael, The Guys and The Great Snapple Caper (Oct 16, 2001)
- Episode 2x21: The Departure (May 21, 2001)
- Episode 2x20: Off the Menu (May 14, 2001)
- Episode 2x19: Baby, It's You (May 7, 2001)
- Episode 2x18: It's Too Late and It's Too Bad (Apr 30, 2001)
- Episode 2x17: Cry Your Name (Apr 23, 2001)
- Episode 2x16: Heart of Mine (Apr 16, 2001)
- Episode 2x15: Viva Las Vegas (Feb 26, 2001)
- Episode 2x14: How the Other Half Lives (Feb 19, 2001)
- Episode 2x13: Disturbing Behavior (Feb 5, 2001)
- Episode 2x12: We Are Family (Jan 29, 2001)
- Episode 2x11: To Serve and Protect (Jan 22, 2001)
- Episode 2x10: A Roswell Christmas Carol (Dec 18, 2000)
- Episode 2x08: Meet the Dupes (Nov 20, 2000)
- Episode 2x07: Wipeout! (Nov 13, 2000)
- Episode 2x03: Surprise (Oct 16, 2000)
- Episode 2x02: Ask Not (Oct 9, 2000)
- Episode 2x01: Skin and Bones (Oct 2, 2000)
- Episode 1x22: Destiny (May 15, 2000)
- Episode 1x21: The White Room (May 8, 2000)
- Episode 1x20: Max to the Max (May 1, 2000)
- Episode 1x19: Four Square (Apr 24, 2000)
- Episode 1x18: Tess, Lies and Videotape (Apr 17, 2000)
- Episode 1x17: Crazy (Apr 10, 2000)
- Episode 1x15: Independence Day (Feb 16, 2000)
- Episode 1x13: The Convention (Feb 2, 2000)
- Episode 1x12: Into the Woods (Jan 26, 2000)
- Episode 1x11: Toy House (Jan 19, 2000)
- Episode 1x09: Heat Wave (Dec 1, 1999)
- Episode 1x07: River Dog (Nov 17, 1999)
- Episode 1x06: 285 South (Nov 10, 1999)
- Episode 1x04: Leaving Normal (Oct 27, 1999)
- Episode 1x03: Monsters (Oct 20, 1999)
- Episode 1x02: The Morning After (Oct 13, 1999)
- Episode 1x01: Pilot (Oct 6, 1999)
Starring as Colonel James Cassidy
- Episode 2x04: Summer of '47 (Oct 23, 2000)
Law & Order: Special Victims Unit (1999)
Guest starring as Gary Dolan
- Episode 20x16: Facing Demons (Feb 21, 2019)
Star Trek: Deep Space Nine (1993)
Guest starring as Luther Sloan
(3 episodes)
- Episode 7x23: Extreme Measures (May 19, 1999) [Special Guest Star]
- Episode 7x16: Inter Arma Enim Silent Leges (Mar 3, 1999) [Special Guest Star]
- Episode 6x18: Inquisition (Apr 8, 1998) [Special Guest Star]
Tales from the Crypt (1989)
Guest starring as Niles Talbot
- Episode 1x01: The Man Who Was Death (Jun 10, 1989)
Guest starring as The Grim Reaper
- Episode 6x08: The Assassin (Dec 7, 1994)
Dear John... (1988)
Guest starring as Ken Bridgewater
(2 episodes)
- Episode 1x21: Friends and Lovers (May 4, 1989)
- Episode 1x04: The Younger Girl (Nov 10, 1988)
Private Eye (1987)
Starring as Lt. Charlie Fontana
(12 episodes)
- Episode 1x12: Hollywood Confidential (Jan 8, 1988)
- Episode 1x11: High Heels and Silver Wings (Dec 11, 1987)
- Episode 1x10: Light and Shadows (Dec 4, 1987)
- Episode 1x09: Both Sides of the Coin (Nov 20, 1987)
- Episode 1x08: Nobody Dies in Chinatown (Nov 13, 1987)
- Episode 1x07: Barrio Nights (Nov 6, 1987)
- Episode 1x06: Blue Hotel (2) (Oct 23, 1987)
- Episode 1x05: Blue Hotel (1) (Oct 16, 1987)
- Episode 1x04: Blue Movie (Oct 2, 1987)
- Episode 1x03: War Buddy (Sep 25, 1987)
- Episode 1x02: Nicky the Rose (Sep 18, 1987)
- Episode 1x01: The Neon Payback (Pilot) (Sep 13, 1987)