‘Reacher’ Season 4 Episode 4 Release Date and Time Confirmed as Karambits and Pieces Arrives on Prime Video

‘Reacher’ fans who binged the season premiere are already circling their calendars for the next chapter of Jack Reacher’s latest case. After Prime Video kicked off the season with a three episode drop, the show settles into a more traditional weekly rhythm, and that shift starts with episode four.

Episode 4 of ‘Reacher’ Season 4 is titled “Karambits and Pieces” and is set to premiere on August 19, 2026. The episode marks the first entry in the season’s weekly rollout, giving viewers a full week to process the opening arc before the mystery deepens.

‘Reacher’ Season 4 Episode 4 Release Date and Time

Prime Video has consistently made new episodes available at 12am PT and 3am ET in the United States, with UK viewers able to stream at 8am BST. That same pattern is expected to hold for episode four, meaning fans in different time zones should plan around the early morning US drop rather than a primetime release.

The streamer has followed a similar structure in previous seasons, releasing the first three episodes together before shifting to a single episode per week for the remainder of the run. That approach carries into Season 4, with episode four representing the first true test of that weekly cadence.

Season 4 pulls Jack Reacher, once again played by Alan Ritchson, into a fresh conspiracy adapted from Lee Child’s novel ‘Gone Tomorrow,’ with no oversized rematch waiting in the wings this time around. That shift in tone should carry directly into the fourth episode, which arrives right as the season’s central mystery starts to widen.

The Full ‘Reacher’ Season 4 Weekly Schedule

The complete episode guide runs as follows, episode one ‘City of Brotherly Love’ and episode two ‘Cage Fight’ and episode three ‘One Small Step’ all landing on August 12, followed by episode four ‘Karambits and Pieces’ on August 19, episode five ‘Bridge’ on August 26, episode six ‘Plum Out of Luck’ on September 2, episode seven ‘Vote for Sampson’ on September 9, and the season finale ‘Cut’ on September 16. That gives fans a full month of new material after the initial three episode launch.

The season is expected to run from August 12 through September 16, giving viewers roughly five weeks of weekly installments following the premiere. It is a familiar rhythm for anyone who followed the release patterns of the previous two seasons.

Notably, the spinoff series ‘Neagley,’ starring Maria Sten as Reacher’s longtime ally, will drop all eight of its own episodes on Prime Video the same day as the ‘Reacher’ Season 4 finale. That timing effectively hands the baton from one show to the other without any gap for fans of the wider franchise.

What Karambits and Pieces Means for the Season’s Bigger Mystery

‘Reacher’ Season 4 is built around Jack witnessing a chance encounter with a distraught stranger on a subway, an event that pulls him into a complex and deadly game against powerful and ruthless adversaries. The season is based on ‘Gone Tomorrow,’ the 2009 Lee Child novel, and trades the rural Maine backdrop of Season 3 for a twistier, more urban mystery set in Philadelphia.

The season leans further into spy thriller territory, with Jack finding himself caught in a high stakes political conspiracy after witnessing a disturbing incident on the subway. Episode four should be where that political thread starts to tighten, moving the story past its opening setup and into the more paranoid, cat and mouse phase that Lee Child’s source novel is known for.

The show has also made character changes from the book, including Kevin Weisman playing Russell Plum, an investigative journalist created specifically for the series and not pulled from the original novel. Fans of the book will also notice that the NYPD detective who partners with Reacher, originally named Theresa Lee in ‘Gone Tomorrow,’ has been renamed Tamara Green and is played by Sydelle Noel. Those adjustments suggest the show is willing to diverge from its source material in ways that could make episode four unpredictable even for longtime readers.

Reception and Behind the Scenes Context Heading Into Episode Four

Season 3 became a major success story for Prime Video, reaching 54.6 million viewers globally within its first 19 days and becoming the platform’s most watched season since ‘Fallout’ Season 1 over a comparable stretch. That track record has raised expectations for how Season 4 performs once it settles into its weekly release pattern.

Ritchson has spoken about the physical demands of this season, describing it in a set visit conducted by Men’s Journal as a “labyrinth of fights,” a comment that lines up with the show’s reputation for elaborate action sequences. Ritchson has also teased a messier romantic complication involving the character Lila Hoth, a wrinkle that adds another layer of tension heading into the middle stretch of the season.

Filming on Season 5 is already underway, with that installment expected to adapt Lee Child’s novel ‘Make Me’ for a 2027 release. That confirmation gives episode four a bit of extra weight, since the show is clearly building toward a longer run rather than treating this case as a standalone detour.

With the mystery only just beginning to unravel and a full month of weekly episodes still ahead, how do you think Reacher’s investigation into the subway conspiracy will escalate once “Karambits and Pieces” picks up the story.