405-Episode Law & Order Legend's Historic TV Comeback Catapults NBC's Best New Show

Published Oct 20, 2026, 9:30 AM EDT

Mads Misasi is a part-time entertainment journalist and full-time marketing content creator. Before joining the ScreenRant team they wrote for TellTaleTV for 9 years working their way up from contributor to Associate Editor. TV has been a passion of theirs since a very young age. Mads typically watches all of the things, especially dramas and sitcoms.

Warning! Spoilers ahead for Line of Fire.NBC's Line of Fire has quickly established itself as one of the network's most promising new procedural dramas, largely thanks to its ability to balance weekly investigations with an increasingly complicated overarching mystery. Following the Hollingsworth family as they navigate careers across different federal agencies, the series has gradually revealed that their greatest professional challenges might be connected to their own family history.

With its fifth episode, "Cul-de-Sac," Line of Fire welcomes another familiar television veteran to its already impressive ensemble. Sam Waterston officially makes his debut as former President Barnes, marking a significant return to NBC following his departure from Law & Order in 2024. However, his arrival offers much more than an opportunity to reunite viewers with a beloved actor.

Barnes has been an important figure in the show's mythology since its premiere, particularly because of his complicated history with Mike Hollingsworth. Now that the former president has entered the picture, the circumstances surrounding an assassination attempt six years earlier are finally coming into focus, potentially changing everything viewers thought they knew about Mike's greatest professional accomplishment.

Sam Waterston Returns To NBC With A Major Line Of Fire Role

NBC Universal

Sam Waterston's remarkable tenure on Law & Order cemented his place as one of NBC's most recognizable television stars. Beginning in 1994, Waterston portrayed Jack McCoy across 405 episodes, becoming an essential part of the long-running procedural's identity. His passionate approach to justice and unwavering determination made McCoy one of the franchise's most beloved characters.

Although Law & Order initially concluded in 2010, Waterston returned when NBC revived the series in 2022. His eventual departure in February 2024 marked the conclusion of an extraordinary television career milestone, with McCoy resigning as District Attorney rather than compromising his principles. The character's exit was particularly emotional for longtime viewers who had spent decades watching Waterston command the courtroom.

Waterston's return to NBC through Line of Fire gives audiences an opportunity to see him tackle a very different position of authority. As former President Barnes, he portrays someone whose political influence and complicated past could have far-reaching consequences for the show's central characters.

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His introduction in "Cul-de-Sac" immediately establishes his importance through his relationship with Mike Hollingsworth. Barnes wants Mike to deliver a speech at the opening of his presidential library, celebrating the Secret Service agent who saved his life during an assassination attempt six years earlier. However, Mike is reluctant to participate because he remains convinced that the individual blamed for the attack wasn't responsible.

The situation immediately highlights why Waterston's appearance is more substantial than a typical celebrity cameo. Rather than simply providing a familiar face for an isolated episode, Barnes represents a crucial connection to Mike's past and a mystery that has been developing since the series began.

With an ensemble already featuring Peter Krause, Hope Davis, and Campbell Scott, Line of Fire certainly isn't lacking established television talent. However, Waterston's addition gives the series another recognizable performer whose character could meaningfully influence its long-term storytelling.

Sam Waterston's Former President Barnes Could Transform Line Of Fire's Biggest Mystery

NBC Universal

The attempted assassination of former President Barnes has weighed heavily on Mike Hollingsworth throughout Line of Fire's opening episodes. Although Mike was celebrated for saving the president's life, he has consistently questioned whether the authorities identified the correct shooter. Episode 5 finally provides some answers, revealing that his suspicions were justified while introducing an even more troubling mystery.

When Russ and Micah offer to reinvestigate the assassination attempt ahead of Barnes' presidential library opening, their initial findings appear to contradict their father's theory. Mike believes the alleged shooter, Sutcliffe, suffered from gout that would have prevented him from properly handling a gun. Although the autopsy report initially suggests otherwise, Russ eventually discovers that the necessary tests were never performed, indicating someone deliberately concealed important information.

The brothers' investigation becomes even more significant when they obtain photographic evidence showing Sutcliffe wasn't holding the weapon during the attack. Instead, another individual was responsible, confirming that Mike's doubts about the official account were warranted all along.

However, the most shocking development comes when Russ and Micah identify the actual shooter and discover he had VIP credentials provided by Mike himself. The revelation raises uncomfortable questions about how someone with access granted by the very agent responsible for protecting the president could have attempted to kill him.

Rather than immediately share their discovery with Mike, the brothers decide to keep the information from him. Their decision is particularly significant because Line of Fire has repeatedly demonstrated how the Hollingsworth family's professional responsibilities become complicated by their personal relationships. Now, Russ and Micah possess information that could undermine their father's reputation and potentially implicate him in the incident that made him a hero.

The episode also establishes an immediate opportunity to pursue the truth. Micah discovers that the shooter, Antosca, will attend the presidential luncheon the following day, placing the brothers on a collision course with someone who could finally explain what happened six years earlier.

Barnes' involvement adds another intriguing dimension to these revelations. While the former president appears eager to celebrate Mike's heroism, there are still unanswered questions about what he knows concerning the assassination attempt and whether his understanding of the incident aligns with the evidence being uncovered.

Waterston's character could consequently become instrumental in determining how this investigation progresses, especially if the truth threatens to expose secrets extending beyond the original shooter.

More importantly, Line of Fire has established that its central mysteries are rarely as straightforward as they initially appear. With the Hollingsworth family already facing threats connected to their federal investigations, the discovery that Mike unknowingly granted access to an assassin raises the stakes considerably.