Louis Herthum

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Louis Herthum
BornJuly 5, 1956 (1956-07-05) (age 66)
Occupation(s)Actor, producer
Years active1978–present

Louis Herthum (born July 5, 1956) is an American actor and producer. Herthum has worked as a stage, television, and film actor, and he has also appeared in national television commercials. He is best known for his recurring role as Dep. Andy Broom on Murder, She Wrote and Peter Abernathy in the HBO television series Westworld.

Early life[edit]

Herthum was born and raised in Baton Rouge, Louisiana.[1]



Herthum started his career as an actor in 1978, performing in local theater, local and regional TV commercials and print advertisements. In 1991, after years of being an unfamiliar actor, he joined the cast of Murder, She Wrote; he played Deputy Andy Broom in 25 episodes of the show's final five seasons (1991–96).[2] Before he played Broom, he played two other unrelated characters, beginning in 1989, his first television roles. He remains close to Angela Lansbury. In 2015, he said in an interview that he saw her steal the show in the play, Blithe Spirit, at the Ahmanson Theater in Los Angeles, California, at the age of 89.[3]

He has appeared in such television series as CSI, CSI: Miami, CSI: NY, NCIS, Criminal Minds, True Blood (joining the cast in 2011[4] for 7 of its 5th season's episodes), JAG,[1] The Mentalist, Men of a Certain Age, True Detective, Treme, Breaking Bad, and The Gates.[2] He appears in two ongoing television series during 2016. He plays Omar on the Netflix series Longmire,[5][6] and Peter Abernathy, a host (robot) on the HBO series Westworld.[1] After appearing in a recurring role in the first season of Westworld, Herthum was promoted to main cast in the second season.[7] In June 2021, he joined the main cast on the Amazon Prime Video series The Peripheral.[8]

His film credits include In the Electric Mist, The Curious Case of Benjamin Button, I Love You Phillip Morris, American Inquisition, The Open Road, Tekken, 12 Rounds, Seconds Apart and The Last Exorcism.[2]


In March 1996, after completing his final episode of Murder, She Wrote, Herthum turned his attention to film production and returned to his hometown of Baton Rouge to produce Favorite Son, his first feature film.[9] Since then, his Baton Rouge-based production company, Ransack Films, has produced five feature films, one feature-length documentary (The Season Before Spring) and one short film ("The Grapevine").[2]



Year Title Role Notes
1982 The Toy Man in Box Uncredited
1997 Favorite Son Lucas Beauchamp
2001 The Ghost Browner
2002 Now You Know Customer
2005 The Rain Makers Art
2006 Road House 2 Deputy Garland Hendricks Direct-to-video
2006 Red Ridge Ness
2006 Nola Gannon
2007 Pride Coach Logan - 1964
2007 The Mist Colonel Uncredited
2008 Lockjaw: Rise of the Kulev Serpent Alan Cade Direct-to-video
2008 American Violet Officer Smith
2008 Mutants Griff Theriot
2008 The Curious Case of Benjamin Button Man at Caroline's Party
2009 I Love You Phillip Morris Doctor
2009 In the Electric Mist Doobie Patout
2009 12 Rounds BEP Employee
2009 The Open Road Surgeon
2010 Wrong Side of Town Briggs Direct-to-video
2010 Tekken Tekken Police Officer #2
2010 The Last Exorcism Louis Sweetzer
2010 Circle of Pain Willy Direct-to-video
2011 Seconds Apart Owen Trimble
2012 Cheesecake Casserole Howard
2013 Inventing Adam Adam's Father
2013 The Last Exorcism Part II Louis
2014 Atlas Shrugged Part III: Who Is John Galt? Wesley Mouch
2015 Truth Bill Hollowell
2017 Be Afraid Chief Martin Collins
2018 I Still See You Dr. Martin Steiner
2018 The Possession of Hannah Grace Man / Killer / Grainger
2018 City of Lies City Attorney Stone


Year Title Role Notes
1980 Beulah Land Party Guest / Wounded Rebel Soldier 2 episodes
1984 Louisiana Fellow student Television film
1989 Hardball Margolis Episode: "Which Witch Is Witch?"
1989–1996 Murder, She Wrote Various roles 25 episodes
1990 Grand Slam Court Room Security Officer Television film
1991 Columbo Technician Episode: "Caution: Murder Can Be Hazardous to Your Health"
1995 Vanishing Son Lloyd Episode: "Birds of Paradise"
1996 The Tomorrow Man Air Force Officer Television film; uncredited
1998 Vengeance Unlimited Conner Gulch 2 episodes
2001, 2003 JAG Communications Officer / Capt. Gilbert
2006 For One Night Sheriff Taylor Television film
2007 The Riches Trooper Yardley Episode: "Pilot"
2007 Ruffian Dr. Harthill Television film
2008 Racing for Time Ralph Connelly
2008 K-Ville Michael Shanley Episode: "Game Night"
2008 Living Proof Dr. Banks Television film
2009 Men of a Certain Age Coach Ford Episode: "Mind's Eye"
2010 Treme Sheriff Don Babineaux Episode: "Right Place, Wrong Time"
2010 Breaking Bad Realtor Episode: "Full Measure"
2010 The Gates Simon Ford 2 episodes
2010 Cigarettes & Nylons David Hunkey Television film
2010 The Defenders Joe Rodgers Episode: "Nevada v. Rodgers"
2010 Journey to Promethea Ari Television film
2011 The Mentalist Chief Arnold Nail Episode: "Red Alert"
2011 CSI: Crime Scene Investigation Detective Lucas Martin Episode: "The List"
2011 Criminal Minds Chief Theirs Episode: "Hanley Waters"
2011 NCIS Ernest McCormick Episode: "Restless"
2011 CSI: Miami Grant Wyatt Episode: "Blown Away"
2012 True Blood JD 7 episodes
2012 CSI: NY Capt. Curtis Smith Episode: "Reignited"
2012–2016 Longmire Omar 8 episodes
2013 Revenge Agent Gentry Episode: "Truth: Part 2"
2014 Sleepy Hollow General George Washington Episode: "The Indispensable Man"
2014 True Detective Terry Guidry Episode: "Haunted Houses"
2014 Stalker Jimmy Lambert Episode: "Manhunt"
2015 Justified Detective Willits Episode: "Fugitive Number One"
2016 The Night Stalker Jed Television film
2016–2018 Westworld Peter Abernathy 10 episodes
2017 Training Day Henry Hollister Episode: "Blurred Lines"
2017 Downward Dog Wade 2 episodes
2017 Narcos Senator Toyle Episode: "Follow the Money"
2017 Law & Order True Crime Sgt. Edmonds Episode: "The Menendez Murders: Episode 1"
2017, 2018 Chicago Med Pat Halstead 2 episodes
2018 Electric Dreams Supervisor Episode: "Kill All Others"
2018 Hawaii Five-0 CIA Agent Matt Harlow Episode: "He Lokomaika'i Ka Manu O Kaiona"
2018 Lucifer Lt. John Decker Episode: "Once Upon a Time"
2018 Chicago Fire Pat Halstead Episode: "Going to War"
2019 What/If Foster 9 episodes
2020 FBI: Most Wanted Blake Wilson Episode: "Getaway"
2020 Dirty John Jack Earley Episode: "Perception Is Reality"
2020–2021 All Rise Sheriff Wayne McCarthy 5 episodes
2021–present Home Before Dark Sheriff Frank Briggs Sr. 12 episodes
2021 Hacks Dennis 2 episodes
2022-present The Peripheral Corbell Pickett Episode #1.1

Video games[edit]

Year Title Role Notes
2013 DmC: Devil May Cry Mundus / Bob Barbas Voice


  1. ^ a b c Bergeron, Judy (October 1, 2016). "The next 'Game of Thrones?': Louisiana's Louis Herthum shares scene with Anthony Hopkins in HBO's new drama 'Westworld'". The Advocate. Retrieved October 13, 2016.
  2. ^ a b c d Louis Herthum at IMDb[unreliable source?]
  3. ^ Garrett, Tommy Lightfoot (September 12, 2015). "Louis Herthum Talks 'Longmire,' 'Murder, She Wrote' And Upcoming HBO Powerhouse 'Westworld,' EXCLUSIVE, Highlight Hollywood News". highlighthollywood.com. Retrieved March 8, 2018.
  4. ^ Eames, Tom (November 20, 2011). "'True Blood' casts two werewolves for recurring roles". Digital Spy. Retrieved February 20, 2012.
  5. ^ "The Worst Kind of Hunter". aetv.com. A&E Television Networks, LLC. Archived from the original on December 5, 2013. Retrieved April 11, 2015.
  6. ^ Gelsomino, Tara (July 9, 2012). "Longmire Episode 1.6 'The Worst Kind of Hunter' Gets it Just Right". criminalelement.com. Macmillan. Retrieved October 13, 2016.
  7. ^ Andreeva, Nellie (March 27, 2017). "'Westworld': Louis Herthum Upped To Series Regular For Season 2 On HBO". Deadline. Retrieved June 24, 2018.
  8. ^ Petski, Denise (June 2, 2021). "'The Peripheral': Louis Herthum, Chris Coy, Melinda Page Hamilton Among 5 Cast In Jonathan Nolan & Lisa Joy's Amazon Series". Deadline Hollywood. Archived from the original on June 2, 2021. Retrieved June 2, 2021.
  9. ^ "Louis Herthum sets Favorite Son filming in BR". The Advocate. November 5, 1995.

External links[edit]