Television has long been a playground for edge-of-your-seat thrills, from modern sensations like Severance and Mindhunter to classics such as Breaking Bad and The Twilight Zone. But for every blockbuster that keeps viewers glued to their screens, there are dozens of underappreciated gems that never got their due. These forgotten thriller shows came achingly close to perfection—tight writing, stellar performances, and gripping tension—yet slipped through the cracks of pop culture. Here are the near-flawless series that deserve a second look.
Devs (2020)
Alex Garland's Devs is a haunting blend of near-future sci-fi and corporate mystery. The eight-episode miniseries follows engineer Lily Chan (Sonoya Mizuno) as she investigates her boyfriend's suspicious suicide, uncovering a secret quantum computing project that challenges reality itself. Unlike fast-paced thrillers, Devs builds suspense through philosophical dread and claustrophobic atmosphere. Its release during the COVID-19 pandemic may have buried it, but its meditation on free will and technology remains eerily relevant. For fans of mind-bending psychological thrillers, this is a must-watch.
Unforgotten (2015–Present)
British crime drama Unforgotten has quietly delivered six seasons of masterful suspense. Each season follows two detectives as they investigate cold cases triggered by the discovery of human remains. The show's genius lies in its empathetic portrayal of both victims and suspects, weaving decades-old secrets with present-day consequences. Its slow-burn tension and intricate plotting make it a standout in the genre, yet it remains largely unknown outside the UK. If you crave intelligent, character-driven mysteries, this is your next binge.
Alias (2001–2006)
Before J.J. Abrams became a household name, he created Alias, a high-octane spy thriller that redefined action television. Jennifer Garner stars as Sydney Bristow, a double agent for the CIA embedded in a criminal syndicate. The series is a whirlwind of jaw-dropping twists, globe-trotting missions, and emotional stakes. While it earned a cult following, it never reached the mainstream heights of 24 or Homeland. For pure adrenaline and ambition, Alias remains one of the most exciting shows of the 2000s.
The Fall (2013–2016)
Gillian Anderson and Jamie Dornan deliver career-defining performances in The Fall, a psychological cat-and-mouse thriller set in Belfast. Anderson plays Detective Superintendent Stella Gibson, who hunts a serial killer targeting professional women. The show flips the usual mystery formula by revealing the killer's identity early, focusing instead on the chilling battle of wits and the exploration of misogyny. Its three seasons are a masterclass in tension, yet it's often overshadowed by similar hits like True Detective. For a deeper dive into the genre, check out 10 thrillers that prove pure cinema never gets old.
Utopia (2013–2014)
The original British Utopia is a fever dream of conspiracy, violence, and visual brilliance. The series follows a group of comic book fans who discover a manuscript that predicts global disasters, putting them in the crosshairs of a shadowy organization. Its striking color palette, dark humor, and unflinching brutality made it a cult sensation, but it was canceled after two seasons. The 2020 American remake failed to capture its magic, leaving the original as a near-perfect, forgotten gem. For more underrated sci-fi, see underrated sci-fi gems worth rewatching.
Counterpart (2017–2019)
J.K. Simmons stars in Counterpart, a spy thriller set in a world where a parallel dimension was accidentally created decades earlier. Simmons plays both a meek bureaucrat and his ruthless alternate self, navigating a web of espionage and identity. The show's intricate plotting and philosophical questions about choice and fate earned critical praise, but low ratings led to its cancellation after two seasons. It's a cerebral, slow-burn thriller that rewards patient viewers—and one of the best shows you've never seen.
State of Play (2003)
Before the 2009 film adaptation, the BBC miniseries State of Play set the standard for political thrillers. Starring John Simm, Bill Nighy, and Kelly Macdonald, it follows a journalist investigating the death of a politician's mistress, uncovering a conspiracy that reaches the highest levels of government. Its six episodes are a taut, intelligent ride that influenced shows like The Wire and House of Cards. Despite its acclaim, it's often forgotten in discussions of the genre. For more overlooked Netflix thrillers, check out forgotten Netflix thrillers that deserve a second look.
These shows may have faded from memory, but their quality endures. Whether you're in the mood for philosophical sci-fi, gritty crime, or high-stakes espionage, these near-perfect thrillers are waiting to be rediscovered. Don't let them stay forgotten.
