Netflix has set the premiere date and released a trailer for its previously unannounced documentary that followed the making of the final season of “Stranger Things,” directed by Martina Radwan. “One Last Adventure: The Making of Stranger Things 5” will drop on Jan.

Netflix's 'Stranger Things' Season 5 documentary, ‘One Last Adventure: The Making of Stranger Things 5,’ shows Duffers and cast making final season.

Netflix has announced a documentary about the filming of the "Stranger Things" final season. The trailer is out.

Stranger Things recently wrapped up its divisive fifth season with a finale that's been praised and panned in equal measure. While some appreciated Eleven's ambiguous send-off, others feel the Duffer Brothers left far too many unanswered questions in an already bloated send-off for the long-running series.

Netflix is bringing the behind the scenes of ‘Stranger Things’ in a new documentary. Find out when and where to watch it.