Compare Slow Horses, Season 6 vs Brothers (2026)

The quick, acerbic dialogue remains a standout, with razor-sharp exchanges and dry wit surviving the season’s darker turn. Reviewers especially praised how the banter keeps tension from becoming monotonous.

The weakest dialogue is described as dull or clunky, especially for supporting characters who already have limited material.

The established personalities still feel sharply defined, from River’s impulsiveness to Lamb’s abrasive competence and Roddy’s ego. Reviewers praised how well the cast understands those ingrained flaws and rhythms.

The fictionalized leads shift noticeably in how clueless or self-aware they seem, creating a midseason characterization wobble.

Twists, returns, deaths, and reversals are among the season’s most consistently praised pleasures. Several critics described the run as unusually unpredictable and packed with major turns.

The big family revelation loses impact when the surrounding plotting is easy to predict.

The scripts retain the series’ signature sarcasm, wit, and efficient plotting even after the lead-writer change. Reviewers who focused on the writing found the handover impressively smooth.

The scripts are frequently criticized as routine and stock, with familiar sitcom mechanics doing too much of the work.

Six episodes continue to feel like a sweet spot for this series. Critics praised the format for avoiding filler, preserving urgency, and still leaving room for plot and character beats.

Eight episodes can feel longer than this premise needs, especially for critics who thought a tighter film-length version would have worked better.

Season 6 is repeatedly described as the show’s bloodiest and most brutal run, yet positive reviewers felt the violence serves suspense and consequence rather than empty shock value.

Comic violence is usually low-stakes, but animal deaths used as punchlines were specifically called off-putting.

Most critics thought the show still balances brutality, grief, sarcasm, and absurd comedy remarkably well under the new showrunner. A few dissenters felt the humor had dulled, but the broader tonal identity remains intact.

The show shifts between broad network-style sitcom, celebrity meta-comedy, political subplot, and occasional crime farce. That mix can feel fuzzy or tonally incoherent.

Despite the showrunner transition, the writing was broadly praised as sharp, polished, witty, and structurally confident. The strongest reviews felt the two-book adaptation was seamless, while a few critics missed some of the old comic bite.

The writing is the most repeated structural complaint, with stock plots, softened satire, and recycled sitcom setups. A minority response appreciated the lighter, less clichéd approach.

Most full-season reviews found Season 6 exceptionally propulsive, particularly from the second episode onward. The biggest tradeoff is that the speed can crowd out quieter emotional scenes or make the middle harder to follow.

The season can drag before reaching its stronger emotional material, creating a sense that the payoff arrives too late.

The closing stretch drew some of the strongest praise of the season, with multiple critics calling the penultimate episode and finale gripping, brutal, and among the show’s best set pieces.

The finale points toward more story but feels rushed compared with the season’s generally laid-back rhythm.

The season uses grief, disposability, loyalty, and institutional neglect to deepen its spy-story mechanics. River’s mourning and the fate of discarded agents give the thriller more emotional and thematic weight.

Family, fatherhood, friendship, and public identity give the show real thematic possibilities, but many critics felt it stays too safe or shallow to explore them fully.

Returning characters are pushed into new emotional and professional territory, with River’s grief and old relationships receiving particular attention. Reviewers generally welcomed the way the season develops familiar people without rewriting who they are.

Character work is one of the more common weaknesses: many family members stay one-note or thin. Harrelson’s late efforts to reconnect with his daughters provide one of the clearer growth arcs.

The assassins, constant pursuit, and uncertainty over who will survive create sustained tension across the season. Reviewers frequently described the run as gripping, anxiety-inducing, and hard to look away from.

The DNA mystery provides a hook, but stretching it across the season weakens its ability to generate sustained suspense.

Most critics found the twists and cliffhangers extremely effective at keeping momentum high and setting up Season 7. A minority disliked the final cliffhanger as a send-off even while acknowledging its impact.

The first season ends with an invitation for more rather than a hard cliffhanger, creating mild curiosity without a particularly strong hook.

The central hunt is easy enough to follow, but combining two novels creates moments where several storylines compete for attention. Some reviewers found the middle stretch harder to track even though the season ultimately pulls the strands together.

The mix of family sitcom, celebrity satire, political story, and DNA mystery can feel unfocused, with at least one critic saying the show never decides what it wants to be.

The broad consensus is that Season 6 tells a strong, often excellent story with personal stakes and relentless danger. More skeptical critics found the core chase repetitive or the underlying mystery merely solid rather than exceptional.

The overall story is divisive but leans negative: charm and warmth are often acknowledged, while thin, familiar plotting keeps the central rumor from reaching its potential.

The premiere earns praise for efficiently setting up several threats and emotional threads at once. Reviewers also noted that the show can juggle disparate material with surprising smoothness.

Traditional sitcom A/B plotting produces mixed results, with some episodes working as breezy family comedy and others feeling forced or dated.

Defense spending, institutional compromise, media influence, and financial irregularities give the spy plot a recognizable contemporary edge. Critics who highlighted this material found it persuasive rather than decorative.

Matthew’s fictional run for governor can be a useful comic extension of the celebrity theme, but some critics wanted sharper or more substantive political satire.

The roughly 45-minute episodes were praised for feeling lean and fast without seeming starved of story. The runtime helps the season keep pressure on the plot while avoiding obvious filler.

Roughly half-hour episodes suit the loose hangout format and keep individual installments from overstaying too badly.

Enthusiasm for more Slow Horses remains extremely high among positive reviewers, with some openly hoping the series continues for many more seasons.

Interest in another season is mild rather than urgent; the first season leaves room for more, but does not create a must-see continuation hook.

Several critics liked how Season 6 spreads plot and development around the ensemble, but others felt the large cast and returning favorites sometimes squeeze regular characters out of focus.

The series often overweights its two stars, leaving wives, children, and satellite relationships with too little to do. A few warmer responses felt the broader household gave the comedy useful balance.

Most critics thought the ensemble was operating at a very high level, with several calling the cast’s work among the strongest the series has delivered. Even more mixed season reviews still tended to praise the performances.

The acting is generally capable, with the central performances naturalistic even when the material is broad. Strong supporting work often compensates for thin characterization.

The caustic workplace comedy and Lamb’s insults still land for most critics, even against a much bleaker story. A few reviewers felt the one-liners were less sharp than in earlier seasons, so the comedy is not universally seen as peak form.

Comedy is the biggest fault line: some found the show genuinely or even extremely funny, while many others called the jokes stale, mild, or inconsistent. The best laughs usually come from the leads riffing or from Taylor and Gilroy.

The season continues to stand out as a distinctive spy thriller by mixing bureaucratic drudgery, messy fieldwork, dark comedy, and grounded danger. Reviewers repeatedly framed that blend as something rival shows do not quite match.

As a light, old-school family sitcom, it works better than it does as ambitious meta satire. Viewers willing to accept the throwback format are more likely to enjoy it.

The chase scenes, fights, and later set pieces were repeatedly described as inventive, breathless, and unusually cinematic. Several reviewers felt Season 6 pushed the action to a new high without losing the show’s grubby identity.

The heightened scrapes, including kidnappings and fist fights, can be lively fun when the show embraces its sillier side.

The season’s drama was widely praised for feeling tense, consequential, and emotionally charged. River’s grief and the threat against Slough House give the espionage plot a more personal edge.

When the show finally leans into family legacy, fatherhood, and strained relationships, its dramatic material can work surprisingly well.

Opinions split sharply on freshness. Many critics loved the unpredictability and personal stakes, while dissenters thought the show was recycling familiar faces, chase mechanics, and a formula that has become predictable.

The true-rumor premise is unusual, but most episode stories fall back on familiar sitcom devices. Critics repeatedly wished the show pushed its stranger idea much further.

The season often earns praise for making violence feel painful, messy, and grounded, but one critic objected to assassins becoming implausibly ineffective when the plot needed the heroes to survive.

The hybrid of real celebrities and fictional families can feel artificial or difficult to buy into. The show’s reality-fiction boundary is a recurring source of unease.

The Slow Horses remain a collection of abrasive, damaged misfits that viewers have nevertheless grown deeply attached to. That affection makes the season’s danger and deaths hit harder.

The fictionalized leads can be very lovable and charismatic when the show lets their friendship breathe, even when their behavior is foolish.

The season’s imagery drew strong praise, from its rain-soaked London atmosphere to more cinematic framing and a cold blue-green palette. Reviewers saw the visuals as a meaningful part of the darker mood.

The strongest visual praise goes to the Texas photography, with Austin and Hill Country locations often looking warm, vibrant, and cinematic. One take found the presentation less consistent from scene to scene.

Grief, loss, and old relationships give Season 6 more emotional weight than a typical chase-driven thriller. Several reviewers found the deaths and River’s vulnerability genuinely affecting, though one felt the relentless pace left too little room for intimacy.

The warmer family moments land better than the broadest jokes, especially scenes about fathers, children, and inherited family history. The emotional payoff is strongest late in the season.

At least one reviewer watched all six episodes in a single sitting, matching the broader sense that the compact, propulsive season is easy to tear through quickly.

The short, easygoing episodes can fly by quickly, making the season simple to binge despite the thin plotting.

Adam Randall’s direction was repeatedly credited with making the season feel more cinematic, darker, and more intense. His handling of action and visual atmosphere drew especially strong praise.

The direction is praised for giving the comedy a polished, visually pleasing finish and for handling blocking and presentation with confidence.

Returning pairings—especially Jack Lowden with Olivia Cooke—were a major highlight, while new character combinations also brought fresh energy. The ensemble’s ability to bounce between bickering, affection, and danger remains a core strength.

McConaughey and Harrelson’s relaxed, lived-in chemistry is the clearest point of agreement and the show’s biggest asset. Even many negative takes say their rapport keeps weak material watchable.

Most reviewers thought individual episodes moved briskly and efficiently, especially once the season gets going. One premiere review found the opening chapter slower and more cumbersome than usual.

Individual episodes generally move briskly, and several critics specifically praised the snappy half-hour rhythm even when they disliked the larger season.

The final cliffhanger is divisive: some reviewers found it breathless and brilliantly effective, while another called it a cheap send-off. Its ability to create urgency for Season 7 is not in doubt.

The season’s central revelation lands weakly for critics who found the plotting predictable or the final turn clumsily handled.

One reviewer found the recurring Sony game placement noticeable enough to become distracting rather than invisible background detail.

At least one critic found the branded drinks conspicuously positioned on camera, making the placement hard to ignore.

Early critical reaction was overwhelmingly positive, with roundup coverage describing Season 6 as one of the series’ strongest outings and highlighting its pace, writing, and performances.

Critical reception is notably split rather than unified, with praise for chemistry and charm offset by recurring complaints about thin plotting and familiar jokes.

Longtime devotees are still well served by the familiar rhythms, callbacks, and returning faces, though one critic warned that viewers less invested in the formula may crave something fresher.

This plays best for viewers who already enjoy McConaughey and Harrelson and want something light. Some critics found the celebrity-centered premise much less compelling for casual viewers.

Gary Oldman and Jack Lowden remain major anchors, with reviewers praising Oldman’s lived-in comic menace and Lowden’s more vulnerable, physically demanding work. Both are repeatedly described as delivering some of their strongest material.

McConaughey and Harrelson are comfortable and committed, but reactions to their self-caricatures range from charmingly natural to underwhelming and overly safe.

New and returning supporting players were widely praised, with several reviewers saying the additions strengthen the ensemble. Harry Lloyd, Lenny Rush, Kyle Soller, MyAnna Buring, and others drew especially positive notices.

Holland Taylor and Lisa Gilroy are the most consistent standouts, repeatedly stealing scenes and supplying sharper laughs. Other supporting performers are often praised even when their characters are underwritten.

Even reviews focused only on the premiere generally found it a strong, enjoyable return. Full-season critics repeatedly described the run as compelling, riveting, and easy to stay engaged with.

Enjoyment varies sharply: some found it easy, charming comfort viewing, while others saw little more than background TV or a celebrity indulgence. The leads’ company is the deciding factor.

The season continues to expand the grimy MI5 ecosystem while keeping its institutional rules, rivalries, and history central to the plot. One review specifically praised the sharp world-building behind the character arcs.

The Austin and Texas setting feels tangible and lived-in, giving the show more sense of place than its conventional sitcom plotting might suggest.

The shabby, ordinary environments remain part of the show’s charm, and the premiere’s shipping-container setting received specific praise for its sad, lived-in detail.

The comfortable ranch-and-garage environment supports the hangout tone, with small details such as the garage bar getting specific praise.

Rain, muted gray-blue tones, wide surveillance-like compositions, and everyday locations give the season a colder, more cinematic look. Reviewers generally felt the visual shift suited the darker story.

Austin is presented with warm, sun-dappled color and an attractive travelogue-like polish that gives the sitcom unusual visual texture.

Hugo Weaving’s American accent drew one of the sharpest individual complaints, with one reviewer calling it the worst they had heard from an Australian actor.

The season’s recurring focus on who accepts blame, who ducks it, and how institutions pass responsibility upward remains a satisfying part of the show’s cynical workplace machinery.

The show is stocked with performers widely seen as overqualified for the material, which helps elevate otherwise familiar sitcom plotting.

Season 6 leans heavily on the show’s history, bringing back old characters and unresolved consequences while preserving the established tone through a leadership change. Reviewers often saw that continuity as a strength.

The Kai–Wyatt romance is a notable sticking point: the show explains away the possible family connection, but that meta acknowledgment did not make the subplot comfortable for everyone.

Although Season 6 combines and alters material from two Mick Herron novels, critics generally felt it preserves what makes the books and series distinctive. The adaptation changes were usually seen as thoughtful rather than damaging.

The family-sitcom shell is undercut by lowbrow jokes, strong profanity, drug use, and some violent animal humor, limiting its suitability for younger family viewing.

Season 6 pays off long-running threads, revives earlier characters, and pushes the larger series story forward. That stronger reliance on prior seasons rewards established viewers more than newcomers.

Strong language is frequent enough to stand out, including abundant f-bombs that clash with the otherwise traditional family-sitcom shape.

The pressure created by a hostile media figure and Taverner’s public exposure fits naturally into the season’s political machinery. One reviewer specifically praised that political-media dimension for feeling tangible.

The premiere setup is brisk, warm, and promising, with the central friendship, family secret, and governor storyline established efficiently.

Reviewers repeatedly celebrated the show’s unusually reliable yearly cadence. The fast turnaround is seen as a major advantage because the story and characters stay fresh in viewers’ minds.

The younger romances are among the weaker subplots, often described as thin, pat, or awkward. A few moments of young-love sincerity soften that criticism.

Kyle Soller and MyAnna Buring’s assassins were widely praised as cold, menacing threats, and Hugo Weaving’s Frank remains formidable. One negative review argued that the killers are underwritten and occasionally made implausibly incompetent.

The show is fundamentally sold on McConaughey and Harrelson’s charisma, and on that specific promise it delivers.

The dense plotting and brisk pace encouraged repeat viewing for some critics, including one who immediately watched the whole season again. Another called it the easiest season to rewatch so far.