Season 4 of Reacher on Prime Video began with a bang, as our large wandering friend got randomly involved with a woman in trouble on the Philadelphia subway. When that happened, nobody knew her plight would reveal a pair of knife-wielding Indonesian killers and their plot to produce and distribute a deadly chemical weapon. And Reacher was the first not to know, since this season of the hit series started the way they always do. On that train, at that moment, the big man was minding his own business. Until he wasn’t minding his own business. And that’s when the trouble began and the fists started to fly. 

Decider has your Ending Explainer for all the answers to your burning questions about Reacher Season 4.

**Spoilers for Reacher Season 4, all episodes now streaming on Prime Video**

Reacher Season 4 Plot Summary:

So, Reacher Season 4 opens with our guy hopping on the SEPTA and arriving right in the middle of a mass conspiracy. What happens next in Reacher?

What happens to the woman on the subway?

When Jack Reacher first sees her, he suspects Anna Merrick (Karen Kwong-Chip) is a suicide bomber. The former military investigator notices how she hugs her puffer coat, mumbles, and clutches at her large bag. But the woman panics once Reacher approaches and offers help. Believing she has no other choice, Anna pulls out a gun and kills herself. 

Yikes! What does Reacher do then? 

Brought in for questioning by Philadelphia police, Reacher meets two detectives, Tamara Green (Sydelle Noel) and Shaun Docherty (Kevin Corrigan). He also meets Anna’s brother Jacob Merrick (Christopher Rodriquez-Marquette), a mild-mannered sheriff’s deputy from smalltown New Jersey. And he also meets a group of pushy federal agents, who wanna know whether Anna gave Reacher anything before she died, such as a flash drive.   

Reacher always finds friends. This season, who has his huge back? 

Our guy doesn’t just get into random scrapes. His whole thing is random. Tamara Green and Jacob Merrick become Reacher’s allies as Anna’s sad story deepens. She was a government worker caught up in something, something not even her brother knew about, and the people searching for this something are soon coming after Reacher and his new allies. Add one more pal to the big man’s crew: Russell Plum (Kevin Weisman), a blogger and “it’s all connected” grand conspiracy guy.

Who’s chasing Reacher in Season 4?   

That’s a question with a lot of answers! First, there are the guys who fire tasers at Reacher and put his crew in cages. They are determined to be CIA agents. But throughout this season, Reacher also gets into it with assorted gunmen and other attackers. What’s going on? All these guys are pursuing the same flash drive Anna stole from her government job, which contains a photo of a congressman, John Sampson (Marc Blucas), from when he was an Army officer on a secret 1990s mission to Indonesia. That’s it? Just a photo? Why? “Someone’s got enough money for an endless supply of assholes,” Reacher says. “I need to find out who.”

Reacher’s real Season 4 enemy isn’t the CIA guys who keep attacking, or even the unknown mercenaries who are also after him. His real enemy turns out to be two women who call themselves Lila (Agnez Mo) and Amisha (Anggun). They are not journalists searching for information about the old photo of Sampson. They are seasoned killers — wielders of a traditional Indonesian blade known as the karambit — and when they blackmailed Anna to bring them the drive, she killed herself instead.

Wait, Lila and Amisha are killers? But don’t Lila and Reacher…have a moment?

Of course they are, and of course they do! In Season 4, Reacher continues its commitment to always including a spicy love scene…that goes pretty much nowhere. 

What are these women really up to? Why do they want the photo?

Lila and Amisha know what the photo actually contains. The US Army mission to Indonesia was cover for the building of a secret CIA lab and the development of a chemical weapon, the formula for which is visible in the background of the photo. These two psychos will kill anyone who gets in their way as they try to recreate the WMD from scratch, prove it works, and then sell the formula on the black market.  

Once Reacher figures all of this out, he calls Congressman Sampson to warn him. But the politician and former Delta Force officer takes matters into his own hands. He spots the bomber Lila and Amisha sent to blow him up and tackles the guy before the WMD can do any further damage. 

Reacher Season 4 Ending Explained: So how does Reacher stop Lila and Amisha? 

Just like in Gone Tomorrow, the Lee Child book on which it’s based, Season 4 of Reacher comes down to a pitched battle inside an abandoned Philadelphia restaurant. There are guns everywhere, but you know this battle will be fist against blade. While his allies engage with Lila and Amisha’s never-ending supply of goons, and secure what’s left of the duo’s toxic WMD cocktail, Reacher prepares for a two-on-one showdown.

Circling and jabbing, Lila, Amisha, and their curving karambit blades cut up Reacher real good. He probably bleeds more in this sequence than he ever has on television. But once the big man tosses Amisha out the window, gets the jump on Lila, and sticks her with her own hypodermic needle — Lila packed it full of the chemical poison she tried to sell — he collapses in the street outside. Another Reacher fight that began totally randomly ends triumphantly. And if you were expecting any consequences at all for Reacher, after all of the Season 4 havoc the Big Cheesesteak caused, you can go watch some other show. 

Until next time, big fella!

Will There Be a Reacher Season 5?

Yes! Prime Video has already renewed Reacher for a fifth season.

Reacher Season 5 will be based on Lee Child’s Make Me and will introduce four new main cast members to the larger Reacher universe:

• Amanda Ip as Michelle Chang
• Jay Baruchel as Chief Buck Bauer
• Ciara Bravo as Eunice
• Kevin Durand as Nokes

Reacher Season 5 is currently in production and will probably hit Prime Video late 2027 or early 2028.

Johnny Loftus (@johnnyloftus.bsky.social) is a Chicago-based writer. A veteran of the alternative weekly trenches, his work has also appeared in Entertainment Weekly, Pitchfork, The All Music Guide, and The Village Voice.