Stories about seemingly ordinary lives unraveling into something deeply disturbing have always unsettled audiences. Netflix's Adolescence captured that so chillingly, peeling back the surface to reveal the frightening psychology of a young boy capable of unthinkable violence. The series lingered not just because of the crime, but because of the fragile, disturbed mindset behind it. But what if that same darkness was not fiction at all?

Well, that same drama, rage, hate, and vitriol, but this time real, is explored in Chasing a Killer: Gary Allen. So where can you catch this harrowing true crime docu-drama?

Sadly, Chasing a Killer: Gary Allen is not available to stream in the United States just yet. The documentary made its debut on February 22, 2026, in the United Kingdom. As of February 22, 2026, folks in the United Kingdom can watch Chasing a Killer: Gary Allen on Prime Video, where it sits proudly in the local library for subscribers to enjoy every bit in high definition.

The gripping series packs two episodes into its first season, dropping them all at once for that binge-worthy vibe,  a format that is ideal for true-crime fans who devour documentaries in one sitting. While popularity metrics are not officially published yet, online chatter and fan posts suggest it is generating buzz among viewers hunting real-life chills.

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And for all the curious cuckoos who are wondering what this series is about, here is what the plot is al about. 

Chasing a Killer: Gary Allen digs into a pair of murders split by years yet tied to the same shady figure. Back in 2000, Gary Allen walked free from trial, leaving cops worried he might strike again. Fast forward to 2019, when Alena Grlakova's death shakes things up and puts Allen Square in the spotlight once more.

Fresh clues start popping up, pushing investigators to revisit old slip-ups. The doc ties these cases together with care, highlighting missed hints that changed everything. Reporters and detectives walk through each twist, laying bare some tough realities. At its core, the show poses that big, haunting query: Is justice still possible after all this time?

While it is not in the United States yet, the buzz suggests it could land stateside soon, especially with its rising popularity.  Until it streams in the States, crime aficionados can watch other crime documentaries on Netflix.  

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Will you be watching Chasing a Killer: Gary Allen? Do let us know in the comments below.