The new season will offer up an in-depth look at the post-conviction process and the emotional toll it takes on those involved.
The original 10-episode true crime show, which turned millions of viewers into amateur detectives when it aired in late 2015, examined the controversial case of Steven Avery, who served 18 years for a crime he was later exonerated for only later to be convicted of the murder of photographer Teresa Halbach, along with his nephew Brendan Dassey.
In the promo released Tuesday (and embedded above), Steven Avery gets another chance to prove his innocence, particularly after Season 1 of Making a Murderer triggered major public interest in his case. We see the new lawyers and defence investigators combing the evidence to unpick the authorities' convictions, as well as the effect that the series phenomenon has had on the men's families and the division it has created in the city of Manitowoc.
She says: "The prosecution's case was Teresa never left the property, but the last call pings off a cellphone tower miles away from the Avery property".
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Some attendees held signs slamming the NSW government and Premier Gladys Berejiklian. The effect of the protesters' lights was varied.
The trailer for the series, which saw the return of filmmakers Laura Ricciardi and Moira Demos, makes clear that the fight to get Avery and his cousin and co-defendant, Brendan Dassey, out of jail will continue with a new lawyer, Kathleen Zellner.
Avery's nephew, Dassey, who has learning difficulties, was also convicted in connection with the murder, based primarily on a confession he made while under interrogation.
Avery is now serving a life sentence without the possibility of parole.
"Making a Murderer Part 2" will be released on Netflix Oct. 19. Just this June, the US Supreme Court rejected a motion requesting arguments be heard in favour of overturning the decision in the appeals court.