NBC’s newest drama puts an entire family of law enforcement officers under one roof, and their personal and professional lives collide in ways that create both danger and drama. Line of Fire premiered on Monday, September 21, 2026, at 10 p.m. ET/PT on NBC, with new episodes streaming the next day on Peacock. The series comes from creator Joshua Safran, whose previous credits include Gossip Girl and Quantico, and counts TODAY co-host Jenna Bush Hager as an executive producer.
The show centers on the Hollingsworth family, whose members work across the Secret Service, U.S. Marshals Service, FBI, and Department of Justice. A seemingly routine case turns deadly, pulling all five family members into a conspiracy that forces them to choose between their sworn duties and their loyalty to each other.
Peter Krause plays Secret Service agent Mike Hollingsworth
Peter Krause leads the cast as Mike Hollingsworth, a longtime Secret Service agent who is one week away from forced retirement at age 57. Mike is haunted by an old case involving an assassination attempt on a former president, and he is not ready to step away from the job he has built his life around.
Krause is a two-time Screen Actors Guild Award winner who played Nate Fisher on Six Feet Under and Adam Braverman on NBC’s Parenthood before spending eight seasons as fire captain Bobby Nash on 9-1-1. His exit from 9-1-1 in 2025 paved the way for this return to NBC.
Krause told Us Weekly that the complex backstory between Mike and Jane was a major draw. “I have not embarked on a family show or a relationship that is as complex or has as complex a history as [our characters] Jane and Mike do,” he said. “The backstory for these characters is just really big and complex and I’m looking forward to getting in there more.”
Hope Davis plays U.S. Marshal Jane Hollingsworth
Hope Davis stars as Jane Hollingsworth, Mike’s estranged wife and a high-ranking U.S. Marshal who frequently works alongside their FBI agent daughter. Davis described the underlying pain that drives Jane’s choices, particularly regarding the family’s hidden history.
“The underlying pain of [why] he chose to leave our family. He went undercover and he didn’t come back. It ripped the family apart. It is a source of incredible pain for the parents, certainly.”
Davis has built a career across film, television, and stage. Her recent TV work includes roles in Succession and Your Honor, and she brings a steady, grounded presence to the role of a mother who has spent decades balancing a demanding career with a fractured home life.
Kat Cunning plays FBI agent Clare Hollingsworth
Kat Cunning plays Clare Hollingsworth, the Hollingsworths’ eldest daughter and an FBI Special Agent who often collaborates with her mother on cases. Clare keeps her family at arm’s length, particularly from her boyfriend Logan, played by Pico Alexander, who is murdered in the series premiere by someone hiding in plain sight.
Cunning, who uses they/them pronouns, told Out magazine that the role came as a surprise. “I did not envision playing an FBI agent,” they said. “I was singing in what I like to call my drag. I was very high-fem with the heaviest beat on.” Cunning found a personal connection to Clare’s guarded nature. “My work is more important to me than my relationship,” they explained. “That’s something I can pull from my real life to some degree.”
Tommy O’Brien plays Secret Service agent Micah Hollingsworth
Tommy O’Brien plays Micah Hollingsworth, Mike and Jane’s eldest son, who works alongside his father in the Secret Service. Micah is eager to climb the ranks and prove he does not need his father’s supervision, though his secret affair with the president’s daughter, Sydney (played by Savannah Lee Smith), complicates matters.
Taylor Bloom plays DOJ analyst Russ Hollingsworth
Taylor Bloom plays Russ Hollingsworth, the youngest of the Hollingsworth siblings and a lawyer at the Department of Justice. Russ is described as the sweetest and most pliable of the family, often caught in the middle of his relatives’ demands for favors that skirt the law. Bloom has spoken about the fun of filming the chaotic family dinner scene in the premiere, which sets the tone for the series’ blend of work and home life.
Charlie Barnett plays Jack Hollingsworth
Charlie Barnett plays Jack Hollingsworth, Mike’s son from his first marriage, who the family believes died five years ago. In the series premiere’s final moments, audiences learn that Jack is alive and has been hiding in plain sight as “Joel,” a friendly neighbor to Clare’s boyfriend Logan. He kills Logan after Logan discovers his true identity.
Barnett is best known for his role as Peter Mills on Chicago Fire, and he also appeared in Russian Doll and The Acolyte. The premiere episode hints that Jack may be connected to a larger conspiracy involving attacks on federal agents, with silver paper cranes marking the murders.
Showrunner Joshua Safran told TV Guide that Jack’s return is the central mystery of the season. “That’s the mystery at the beating heart of Line of Fire,” he said.
Sam Waterston and other guest stars
Sam Waterston returns to NBC in a guest role as former President Thomas Barnes, a character with a deep personal bond to Mike Hollingsworth. Waterston spent more than 400 episodes as District Attorney Jack McCoy on Law & Order before departing in 2024.
Other guest stars include Campbell Scott as Terry, a U.S. senator and Jane’s boyfriend, and Chris Chalk as President Kayana, the current commander-in-chief. Tyler Posey is set for a multi-episode arc as Brandon Hayes, a handsome NSA agent and former Marine who served overseas with Russ Hollingsworth. Posey first appears in the fifth episode, airing October 19.
Where to watch Line of Fire worldwide
Line of Fire airs on NBC on Mondays at 10 p.m. ET/PT, with new episodes streaming the next day on Peacock for viewers in the United States. Canadian audiences can watch on Citytv and stream through Citytv+.
No confirmed UK broadcaster or release date has been announced for the series. Season 1 consists of 10 episodes. The series holds an 89% score on Rotten Tomatoes based on early reviews, with critics praising the family dynamics and the central mystery.
The show’s blend of procedural casework and family drama has drawn comparisons to Blue Bloods, though the Hollingsworths are a far more fractured unit than television’s famous Reagan family. Creator Joshua Safran summed up the appeal simply: “You’re going to watch a case unfold every week by very capable people who are in an area or areas of law enforcement that you may have seen before, but you’re also going to go home with them and see how they take that work home with them, how it impacts their family life, how it impacts their relationships.”
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