Stranger Things (2016– )
35 user 3 critic

Chapter Eight: The Mind Flayer 

An unlikely hero steps forward when a deadly development puts the Hawkins lab on lockdown, trapping Will and several others inside.


Matt Duffer (as The Duffer Brothers), Ross Duffer (as The Duffer Brothers)


Matt Duffer (created by) (as The Duffer Brothers), Ross Duffer (created by) (as The Duffer Brothers) | 5 more credits »




Episode cast overview, first billed only:
Winona Ryder ... Joyce Byers
David Harbour ... Jim Hopper
Finn Wolfhard ... Mike Wheeler
Millie Bobby Brown ... Eleven
Gaten Matarazzo ... Dustin Henderson
Caleb McLaughlin ... Lucas Sinclair
Noah Schnapp ... Will Byers
Sadie Sink ... Max Mayfield
Natalia Dyer ... Nancy Wheeler
Charlie Heaton ... Jonathan Byers
Joe Keery ... Steve Harrington
Dacre Montgomery ... Billy Hargrove
Cara Buono ... Karen Wheeler (credit only)
Sean Astin ... Bob Newby
Paul Reiser ... Sam Owens


The Demogorgons invade the laboratory killing everybody inside and Joyce sedates Will that is connected and giving information to them. There is a blackout locking the laboratory and Hopper and Bob head to get the power and systems back to let Joyce, Will, Mike and Dr. Owens leave the security room. Meanwhile Dustin, Steve, Lucas and Max meet Nancy and Jonathan at the laboratory front gate. Soon Joyce, Will, Mike and Hopper join them and they head to Joyce's house. But the Demogorgons are hunting them down. Written by Claudio Carvalho, Rio de Janeiro, Brazil

Plot Summary | Add Synopsis


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Parents Guide:

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Did You Know?


The first time Mike, Dustin and Lucas have seen Eleven since "Chapter Eight: The Upside Down" (S1E8). See more »


BASIC was a real programming language which was highly popular back in the 1980s. But the acronym stands for "Beginner's All-purpose Symbolic Instruction Code," the important word here being "beginner." It was a simple, human-readable programming language that even complete novices could master quickly. No programmer would ever have considered writing security or any other mission-critical code, least of all for a secret government scientific laboratory, in BASIC. They'd have used COBOL or FORTRAN or even PASCAL. See more »


Dustin Henderson: The Hive Mind. A collective consciousness. It's a super-organism.
Mike Wheeler: And this is the thing that controls everything. It's the brain.
Dustin Henderson: Like the Mind Flayer.
See more »


Referenced in DuckTales: Moonvasion! (2019) See more »


Should I Stay or Should I Go
Written by Topper Headon, Mick Jones, Paul Simonon and Joe Strummer
Performed by The Clash
See more »

User Reviews

Laziest writing of the series

I'll keep it short and sweet. Everything about this episode is predictable to the point of being laughable. If you have watched The Walking Dead, Supernatural, or any TV really, you have seen this episode. Very disappointed considering the rest of the show

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Release Date:

27 October 2017 (USA) See more »

Company Credits

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Technical Specs


Sound Mix:

Dolby Digital



Aspect Ratio:

2.00 : 1
See full technical specs »

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