Based on the Jack Reacher book series by Lee Child, it stars Alan Ritchson as the title character, a self-proclaimed hobo and former U.S. Army military policeman with formidable strength, intellect, and abilities.

After he is freed, he teams up with two honest police officers, Oscar Finlay and Roscoe Conklin, to investigate a local conspiracy involving corrupt lawmen, politicians, and a wealthy business tycoon and his son who are running a counterfeiting syndicate as well as uncovering his brother's murderer.

[7] On January 14, 2020, the TV series was greenlit, with Don Granger, Scott Sullivan, David Ellison, Dana Goldberg, Marcy Ross, and Christopher McQuarrie as executive producers with Child.

[10] To adapt the books to screen the writers decided they would need to make Reacher verbalize his thoughts more often, but that they would keep his dialogue short and direct and have him only speak longer to people he respects.

[3] On June 11, 2021, Kristin Kreuk, Marc Bendavid, Willie C. Carpenter, Currie Graham, Harvey Guillén, and Maxwell Jenkins were announced to have joined the cast in undisclosed capacities.

[16] On September 21, 2022, Serinda Swan, Ferdinand Kingsley, and Rory Cochrane joined the main cast while Domenick Lombardozzi, Luke Bilyk, Dean McKenzie, Edsson Morales, Andres Collantes, Shannon Kook, Ty Olsson, Josh Blacker, and Al Sapienza as guest star for the second season.

[19] On March 6, 2024, Brian Tee, Johnny Berchtold and Roberto Montesinos were cast as regulars of the third season, while Daniel David Stewart in a recurring role.

The website's critics consensus reads, "Reacher captures the trademark bulk of its titular hero while trading away some of his definition, but fans of the novels will find plenty to love about this faithful adaptation.

[30] Lucy Mangan of The Guardian said, "This rollicking adaptation of Lee Child's man-mountain ex-military sleuth is hugely fun, packed with punchups and far better than Cruise's movie efforts.

"[32] Joshua Alston of Variety praised the casting of Ritchson but said the character was unsuitable to carry this kind of show: "the longer it runs, the more obvious its protagonist-shaped void becomes".

[33] Dan Fienberg of The Hollywood Reporter called it "frustratingly over-faithful to the source material", saying, "I wouldn't mind another season, but I'd probably still rather read another book.

The website's critics consensus states, "Brawny as Alan Ritchson's biceps, Reacher swaggers confidently into its sophomore season as rock 'em sock 'em pulp with a sly wink.