Reacher Season 4: What Book It's Based On, Spin-Off, and Everything Else We Know

Amazon Prime Video's Reacher series is becoming the Reacher franchise, as the next story from this world will be told on the upcoming Neagley spin-off, which is focused on Reacher's pal Neagley (Maria Sten). Despite that, the main Reacher series is absolutely not going anywhere, because Prime Video renewed it for a fourth season even before Season 3 dropped.

With a show as popular as Reacher is — it was the most-streamed show, period, in early March 2025, according to Nielsen — it's really not possible to end one season without thinking about what's coming next, and since the ongoing main cast is just two people, rather than a large ensemble cast that all gets pay bumps each season, Reacher feels like it's going to be a staple of Prime Video's lineup for a very longtime. 

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That being said, let's look at what's ahead for the not-so-gentle giant.

Reacher Season 4 latest news

Reacher star Alan Ritchson has been busy lately, as his biggest headlines to start 2026 so far have been that he dropped a popular Netflix movie and battled one of his neighbors in ritual combat. But he's still been working on Reacher, too — Ritchson posted on Instagram on March 25 that he's completely done with his work on Season 4 after wrapping up his ADR sessions. There's surely still plenty of work to be done for series creator/showrunner Nick Santora, but Ritchson confirming he's finished with Season 4 means the new season is that much closer to hitting our screens. 

When can we expect Reacher Season 4 to arrive?

Production on Reacher has been like clockwork, and that doesn't appear to have changed with Season 4, which has wrapped up production already.  Even so, we don't have any sort of official release window for Season 4 yet, but it's a safe bet that Reacher Season 4 will premiere some time in 2026.

We've got an unusual wrinkle this time, though. Prime Video also has a Neagley-focused spin-off show that filmed before Reacher Season 4 did. Despite production now being complete on both of these seasons of TV, we still don't know what, if anything, their storylines have to do with each other, or which one will start airing on Prime Video first.

What's going on with the Neagley show?

Reacher's BFF is getting her own show, simply titled Neagley, which stars Maria Sten and features at least an appearance by Alan Ritchson. Given the fact that both this spin-off and Reacher Season 4 have been filmed, but neither even has a release date, we're starting to wonder if these two shows will air back to back, or maybe even simultaneously.

We don't know what's going on yet, but in the meantime, here's everything we know about Neagley.

Which book will Reacher Season 4 cover?

With Gone Tomorrow — the 13th book in the Reacher series — revealed as the source material, we now know Season 4's premise. We'll discuss it briefly below, but don't worry — we'll only discuss the premise and the opening scene.

The book opens with Reacher riding the subway in the middle of the night when he spots a random woman on the train who he believes is showing all the signs of being a suicide bomber. When he tries to speak with her, she shoots herself in the head. This shocking event sends Reacher down a whole new conspiratorial rabbit hole, one that's a lot bigger in scope than the situation he got involved with in Season 3. Gone Tomorrow plays more like a spy thriller than the stories Reacher has tackled so far. Which is a good thing, because the show started to feel a little bit samey in Season 3 — we could use some kind of shakeup to the formula this time.

Reacher Season 4 cast and crew

There is rarely much in the way of connective story tissue between seasons of Reacher, the occasional cameo notwithstanding, and so generally the only cast members who return for regular roles each season are Reacher himself (Alan Ritchson) and Neagley (Maria Sten), the only character besides Reacher who has appeared in all three seasons. That will likely continue to be the case, though it's worth remembering that Season 2 did introduce the two other remaining living members of Reacher and Neagley's old squad, the 110th Special Investigations Unit, characters that could be brought in to help just like Neagley always is. But none of them ever appeared in any present-day storylines outside of the novel Bad Luck and Trouble — the book Season 2 was adapted from — so it may be best not to get your hopes up. The Neagley spin-off, on the other hand, is not based on any book, so they may be more likely to pop back up there.

As for the new cast members joining Season 4, in mid-June 2025, Prime Video announced that Jay Baruchel, Sydelle Noel, AGNEZ MO, Anggun, Kevin Weisman, Marc Blucas, Kevin Corrigan, and Kathleen Robertson are in. Then, a couple weeks later, Baruchel was replaced with Christopher Rodriguez-Marquette after Baruchel backed out for personal reasons.

There's also some fuel to the idea that Duffy (Sonya Cassidy), a breakout character from Season 3, could move over to the Neagley spin-off. As Screen Rant theorizes, toward the end of the season, Duffy revealed her plans to leave the DEA, which prompted Reacher to suggest that he put her in touch with some of his private investigator friends. Neagley is a private investigator in Chicago.

Beyond that, Season 4 of Reacher will continue to operate under the purview of creator/showrunner Nick Santora.

Reacher Season 4 cast:

• Alan Ritchson as Jack Reacher
• Christopher Rodriguez-Marquette as Jacob Merrick
• Sydelle Noel as Tamara Green
• AGNEZ MO as Lila Hoth
• Anggun as Amisha Hoth
• Kevin Weisman as Russell Plum
• Marc Blucas as John Samson
• Kevin Corrigan as Detective Docherty
• Kathleen Robertson as Elsbeth Samson

Reacher Season 4 behind the scenes

Something seemingly completely random happened while Reacher was filming a scene at a restaurant in Philadelphia in June: Former president Joe Biden showed up for lunch with his wife Jill and son Hunter. Star Alan Ritchson chronicled the incident in an Instagram post.

"Was a privilege and honor to meet the Biden family. They couldn't have been more lovely. Kind, joyful, gracious and present," Ritchson posted alongside images of himself talking to the Bidens. "We chatted briefly about simple stuff, like string theory and quantum entanglement. Then Joe beat me at arm wrestling. All in a day's work."

The whole situation was almost certainly a coincidence and not a sign that the Bidens will have a cameo in Reacher Season 4 — thanks to Biden's successor in the White House being so erratic, political tensions in the USA are probably a little bit too high for Amazon to want to do something like that. 

But it's not a completely ridiculous idea, because Ritchson, an outspoken Christian, already ran afoul of the MAGA crowd more than a year ago when he referred to Donald Trump as "a rapist and a con man" and said it's absurd that "the entire Christian church seems to treat him like he's their poster child" in an interview with The Hollywood Reporter. Despite that "controversy," ratings for Reacher Season 3 were actually up over Season 2.

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Where to watch Reacher

The first three seasons of Reacher are available to stream in full from Amazon Prime Video.