# Louis Herthum

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

Herthum was born and raised in Baton Rouge, Louisiana.

## Career
### Acting

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). Before he played Broom, he played two other unrelated characters, beginning in 1989, his first television roles. He remained close to Angela Lansbury until her death in 2022. 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.
He has appeared in such television series as CSI, CSI: Miami, CSI: NY, NCIS, Criminal Minds, True Blood (joining the cast in 2011 for 7 of its 5th season's episodes), JAG, The Mentalist, Men of a Certain Age, True Detective, Treme, Breaking Bad, and The Gates. He appears in two ongoing television series during 2016. He plays Omar on the Netflix series Longmire, and Peter Abernathy, a host (robot) on the HBO series Westworld. After appearing in a recurring role in the first season of Westworld, Herthum was promoted to main cast in the second season. In June 2021, he joined the main cast on the Amazon Prime Video series The Peripheral.
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.

### Producing

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. 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").

## Filmography
### Film

| 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 | |

### Television

| 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 | 2 episodes |
| 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 | Television film |
| 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 | The Peripheral | Corbell Pickett | 8 episodes |
| 2025 | The Night Agent | Jacob Monroe | 10 episodes |

### Video games

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