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Featured Image Credit: Netflix
The three-parter centres on the murder of semi-professional American footballer Odin Lloyd and the subsequent arrest, trial and conviction of NFL player Aaron Hernandez.
The new docu-series only landed on Wednesday (15 January), but true crime fans have already binged their way through and are blown away by the case.
One Twitter user wrote: "Everyone, sports fan or not, should watch the Aaron Hernandez documentary on Netflix. It is incredible."
While a second posted: "Had to watch some stand-up comedy to rinse this episode of the Aaron Hernandez's documentary I just watched. Good grief it was dark."
A third chipped in: "Killer Inside: The Mind of Aaron Hernandez is utterly engrossing. Props to the filmmakers too for establishing Odin Lloyd as more than just a 'victim'. Too many crime docs get caught up in the celebrity of the killer."
The 2013 murder of Lloyd, who had been in a relationship with the sister of Hernandez's fiancée Shayanna Jenkins, hit headlines worldwide when Hernandez, who had recently signed a five-year $40 million (£31m) contract with the New England Patriots, was arrested at his home and later charged.
Following an incredibly public trial, Hernandez was convicted of first-degree murder in 2015 and sentenced to life in prison.
He was later tried for two other murders - unrelated to Lloyd - and was acquitted by the jury.
Just two days after the acquittal in 2017, Hernandez took his own life in his cell. He was 27.
Although the trial was big news at the time, many viewers were completely unaware of a number of details, including Hernandez upbringing and a diagnosis of chronic traumatic encephalopathy (CTE) being made after his death, with some saying it made them look at the case differently.
One person wrote: "I'm not excusing anything Aaron Hernandez did, but I do think the culmination of his childhood and long-standing brain damage had an effect on how his life spiralled and ended. Can't ignore that."
Killer Inside: The Mind of Aaron Hernandez is available to stream on Netflix right now.