One of the new drama's guest performers has starred in multiple projects with cast member Hope Davis, including the series Furious.
By Samantha Vincenty Updated Oct 19, 2026, 5:01 PM ET
Line of Fire | Official Trailer | NBCNow Playing1:46TrailerLine of Fire | Official Trailer | NBC
0:45TrailerNBA Tip-Off is going to be FIRE!
1:57Sneak PeekLine of Fire | First Look | NBC Share this on Reddit Share this on Facebook Share this on X Share this by Email Share this by SMS Add us on GoogleKey Takeaways
- Line of Fire, a political thriller-family drama produced by Jenna Bush Hager, stars Hope Davis and Peter Krause as members of a family deeply connected to U.S. law enforcement and government agencies.
- Sam Waterston, known for his long-running role as Jack McCoy on Law & Order, guest-stars as former President Thomas Barnes.
- Tyler Posey, Campbell Scott, Chris Chalk also guest star in Season 1.
New series Line of Fire has revealed its first slate of guest stars — and one is a very familiar face to fans of NBC dramas.
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Law & Order alum Sam Waterston will lend his gravitas to an important guest role on the Jenna Bush Hager-produced series, which is best described as "political thriller meets family drama." Actors Campbell Scott and Chris Chalk also guest-star this season, and Teen Wolf's Tyler Posey has an arc beginning on the October 19 episode.
Line of Fire stars Hope Davis as U.S. Marshal Jane Hollingsworth, with Peter Krause as Secret Service Agent Mike Hollingsworth (Peter Krause). The Hollingsworths' son Micah (Tommy O'Brien) is also a Secret Service Agent, their daughter Clare (Kat Cunning) is in the FBI, and their other son Russ (Taylor Bloom) works for the Department of Justice. Charlie Barnett also stars.
Learn more about Line of Fire's guest stars below, and check back for updates throughout the season.
RELATED: Everything to Know About Line of Fire, NBC's New Family Drama-Thriller
Line of Fire guest stars and the characters they play
Sam Waterson
Sam Waterston attends the 18th Annual SeaChange Summer Party at Montage Laguna Beach on July 26, 2025 in Laguna Beach, California.
Photo: Getty ImagesSam Waterson (Law & Order, Grace & Frankie) portrays former President Thomas Barnes in a role that marks his return to NBC. Krause's Mike Hollingsworth served as part of Barnes' Secret Service detail while in office, and is haunted by an assassination attempt that Hollingsworth thwarted years ago.
Waterston famously played District Attorney Jack McCoy on Law & Order, appearing in over 400 episodes through 2024. His additional TV roles include Sol Bergstein on Grace & Frankie and Charlie Skinner on The Newsroom, in addition to starring in NBC drama I'll Fly Away from 1991-1993.
RELATED: What Happened to Sam Waterston's Character Jack McCoy on Law & Order?
Campbell Scott
Campbell Scott attends the world premiere of "Millers in Marriage" at the Princess of Wales theater during the Toronto International Film Festival (TIFF), in Toronto, Canada on September 11, 2024. (
Photo: AFP via Getty ImagesCampbell Scott plays a U.S. Senator named Terry, who is also Jane Hollingsworth's boyfriend (the Hollingsworths have been separated for some time). The character is trapped in relationship purgatory, and his wish to move forward directly conflicts with Jane's work priorities.
The role is a reunion for Scott and Hope Davis, as the actors have co-starred in multiple projects together since the 1990s. Those include the films The Secret Lives of Dentists and The Daytrippers and TV series Six Degrees and Furious.
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Chris Chalk
Chris Chalk arrives at the Los Angeles premiere of the original series “IT: Welcome To Derry” at Warner Bros. Studios on October 20, 2025 in Burbank, California.
Photo: FilmMagicChris Chalk plays President Kayana, a decisive leader preoccupied with his approval ratings. The middle Hollingsworth sibling, Micah, is part of the Secret Service detail for the president and his family and is having a secret affair with the President's daughter (code name: Sparrow).
Chalk's credits include It: Welcome to Derry, Perry Mason, and Gotham, on which he played Lucius Fox.
RELATED: Meet the Cast of Line of Fire, Peter Krause's Political Thriller Series
Tyler Posey
Tyler Posey attends the premiere of Columbia Pictures' "Resident Evil" at the United Theater on Broadway in Los Angeles on September 15, 2026.
Photo: Getty ImagesTyler Posey will portray Brandon Hayes in an upcoming multi-episode arc beginning in Episode 5. His character is described as an NSA agent "who lights up a room." Hayes served in the Marines overseas — and that's where where he first forged a bond with Russell Hollingsworth.
"[Brandon] is former military, and works with the NSA now. He knows how to be rigid, he knows how to be disciplined, but he's also got this really cute lightheartedness to him, which I think is so fun to play," Posey told NBC Insider.
Posey's acting credits include a starring role in the MTV drama series Teen Wolf and a recurring role in the comedy series Jane the Virgin.
Watch Line of Fire on Mondays at 10/9c on NBC, streaming next-day on Peacock.
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