Streaming platforms drop a new “unmissable” thriller every week, and the algorithm rewards the loudest marketing budget, not necessarily the best writing. Somewhere in that noise, a handful of genuinely excellent mystery and thriller series quietly came and went. They were loved by critics, embraced by the small audience that found them, but never quite broke into the mainstream conversation.
Here are eight critically acclaimed thriller series you missed. Note that we have not included shows that were produced in Asia, as that would require a separate post.
1. The Sinner (2017–2021)
Where to stream: Netflix.
The premise: Each season involves a new, seemingly inexplicable crime committed by an ordinary person with no apparent motive. This draws in a haunted small-town detective, who becomes obsessed with understanding not whether they did it, but why.
The Sinner flips the standard murder mystery on its head by telling you who committed the crime in the first episode. It then spends the rest of the season digging into the psychological wreckage that led to it. Critics responded to that inversion enthusiastically, and the show earned a 90% Rotten Tomatoes score for its Jessica Biel-led first season and an even stronger 97% for its second.
Later seasons held steady in the mid-to-high 80s. Despite that remarkably consistent acclaim across four seasons, it rarely comes up alongside prestige-thriller staples like Mindhunter or True Detective in “best of” conversations.
Bill Pullman, playing Detective Harry Ambrose, was a series regular. Sinners ended after 4 seasons, and creator and executive producer Derek Simmonds confirmed that the story he wanted to tell was done. He also mentioned that he did not want the storyline to get repetitive.
Why it got overlooked: It started life on USA Network – a channel known at the time for comfort-watch procedurals, not prestige drama. So critics and audiences were slow to take its ambitions seriously, even as its Rotten Tomatoes scores quietly outperformed shows with far bigger reputations.
2. Devs (2020)
Where to stream: JioHotstar in India; Hulu in the US.
The premise: A software engineer investigates her boyfriend’s mysterious death and uncovers a secretive quantum computing project inside a Silicon Valley tech giant that may be able to predict, or control, the future.
Alex Garland’s Devs earned multiple Emmy nominations and was singled out by critics for its cinematography, its hypnotic pacing, and its ambitious collision of determinism, free will, and grief. It’s less a whodunit than a slow-burn philosophical thriller, and that density is precisely what kept it from becoming a widely watched show. Some may find it slow, but audiences who stuck with its eight episodes tend to rank it among the smartest sci-fi mysteries of the last decade.
Creator Alex Garland deals with dense but relevant themes like tech companies ignoring the larger impact of their product. Back in 2020, when AI tools were still not a part of our daily lives, Devs was considered a series ahead of its time.
Why it got overlooked: A deliberately slow, cerebral pace that rewards patience most casual viewers don’t bring to a “thriller.”
3. The Fall (2013–2016)
Where to stream: Netflix.
The premise: A Metropolitan Police detective superintendent travels to Belfast to lead a stalled murder investigation. But she’s unaware that she’s playing a slow, deliberate cat-and-mouse game with a methodical serial killer hiding behind the mask of a devoted family man.
The Fall gave Gillian Anderson one of her finest post-X-Files roles, and critics singled out the show for refusing to sensationalize violence against women. Instead, it focuses on the procedural discipline of the investigator and the unsettling ordinariness of the killer’s domestic life. It’s an unusually cerebral entry in the serial-killer genre, more interested in psychology and power than jump scares.
The Fall built a small but devoted following without ever crossing into must-watch mainstream territory the way shows like True Detective did in the same period. After two stellar seasons, The Fall ended with a third season that some considered to be unexpected and “devastatingly good”. Overall, this is one of the best hidden gem mystery shows that you can check out.
Why it got overlooked: Its deliberately slow, dialogue-heavy pace and uncomfortable subject matter kept it from becoming a casual watercooler recommendation.
4. Giri/Haji (2019)
Where to stream: Netflix
The premise: A Tokyo detective travels to London to track down his brother. His brother is presumed dead but has actually gone into hiding after a Yakuza-linked killing threatens to ignite a full-blown gang war back home.
Few crime thrillers earn a perfect 100% critics score on Rotten Tomatoes, and Giri/Haji is one of them, praised for its ambitious blend of Japanese and British storytelling styles, its offbeat visual flourishes (including an animated dream-ballet sequence in its finale), and a sharp sense of humor rare in the genre.
Giri/Haji was a joint venture between Netflix and the BBC, and it originally aired quietly on BBC Two before landing on Netflix. It received widespread acclaim and became something of a cult recommendation. This is the kind of show viewers discover, love, and then can’t quite believe more people haven’t seen.Giri/Haji has some strong character work and weaves multiple storylines with expertise
Why it got overlooked: A bilingual, two-city structure and an unconventional visual style made it a hard sell to mainstream audiences used to straightforward procedurals. Even though it’s not a conventional crime drama, it is one of the most underrated mystery thriller series out there.
5. Unforgotten (2015–present)
Where to stream: Prime Video, BBC Player Amazon Channel
The premise: A pair of London detectives reopen decades-old cold cases, patiently tracing a single set of long-buried remains back to a handful of ordinary people whose entire lives have been quietly shaped by what happened decades earlier.
Unforgotten has run for six seasons on ITV without ever generating the noise of splashier British crime dramas, despite critics consistently praising its humane, unhurried approach to cold-case investigation. Rather than treating suspects as puzzle pieces, the show spends entire episodes inhabiting their ordinary lives before slowly revealing how the past has been quietly poisoning the present.
Unforgotten is one of the most purely well-written procedurals of the last decade, anchored by performances (including the late Nicola Walker’s) that reviewers routinely single out as some of the best on British television. The show has achieved long-standing success over 6 seasons and, like True Detective, it weaves philosophical stories in it’s storyline. It has also been renewed for a 7th season.
Why it got overlooked: A modest network home and an unglamorous, character-first approach that trades twists for empathy. In short, this series is the opposite of what usually goes viral.
6. Banshee (2013–2016)
Where to stream: Prime Video in India (also available on Prime Video and HBO Max in the US)
The premise: An ex-con assumes the identity of a small town’s newly appointed sheriff, using the disguise to hide from the criminal underworld he betrayed while trying to protect the woman he loves.
Banshee is pulpier and more violent than most shows on this list, but underneath the action is a genuinely compelling story about identity, guilt, and reinvention. Plus, it’s anchored by a magnetic lead performance by Antony Starr, and this was long before he grabbed eyeballs as Homelander in The Boys. In all, it is a must-watch crime thriller for those who prefer a lighter tone.
Banshee is packed with tension-filled drama and is also ludicrous at times. But the series is a ton of fun if you go along with the flow, and it has some terrific episodes. It landed on Cinemax, which is a network better known at the time for late-night action fare. This meant it never got taken as seriously as it deserved, despite a small, fiercely loyal fanbase that still champions it.
Why it got overlooked: Cinemax’s reputation led critics and audiences to dismiss it before giving it a chance.
7. Dark Winds (2022–Present)
Where to stream: AMC+ / Netflix.
The premise: Set in the 1970s Four Corners region, the show follows two Navajo police officers, Joe Leaphorn and Jim Chee, as they investigate a series of seemingly unrelated crimes. As they peel back the layers of their cases, they find themselves grappling with the harsh realities of their land, the legacy of historical trauma, and the complex interplay between traditional Navajo beliefs and the modern world.
Dark Winds elevates the standard procedural by grounding its mystery in a deeply specific cultural and geographical context. Rather than relying on simple “whodunnit” mechanics, the show spends time exploring the tension between the characters’ duty to the law and their commitment to their community.
Critics have responded to this atmospheric approach with high praise, consistently earning the series near-perfect marks on Rotten Tomatoes. The first season received a 100% rating, and the subsequent seasons maintain that critical momentum, making it one of the best dark crime dramas on Prime Video.
Despite that consistent acclaim, it often misses out on being mentioned alongside the heavy-hitting crime dramas that dominate the cultural conversation. It is a slow-burn experience that prioritizes mood and character development over rapid-fire plot twists, creating a viewing experience that is as haunting as it is compelling. The series is based on Leaphorn & Chee suspense novels written by Martin’s late friend, and George R.R. Martin serves as an executive producer
Why it got overlooked: Because it premiered on AMC+ and is rooted in a specific, nuanced cultural landscape, it didn’t benefit from the massive, broad-market marketing blitz that often accompanies flagship network shows. As a result, many viewers have been slow to discover this gem.
By Suvajit Banerjee
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