Stranger Things (2016– )
24 user 47 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 ... Dr. 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


TV-14 | See all certifications »

Parents Guide:

View content advisory »






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 »

Did You Know?


Originally titled "The Brain" See more »


After unlocking the doors, Bob can be seen through the security cams system grabbing the gun before leaving the room. The desks remain empty except for the monitors and keyboards. Then, before he returns to set on the sprinklers, the gun can be seen on the desk through the cameras, but when Bob returns to the computer, there's no gun in the desk. The second time he leaves the room, he forgets the gun, which is lying on the same spot where it was shown on the security footage. See more »


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


References Star Wars: Episode IV - A New Hope (1977) See more »


The Four Horsemen
Written by James Hetfield, Lars Ulrich and Dave Mustaine
Performed by Metallica
See more »

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User Reviews

The Most Mind Flaying Episode of the Series
19 January 2018 | by imranfarid-83811See all my reviews

Breathing...Just Breathing......What an epic showdown has this episode been.

From the doctors to the servants to our favorite Bob, everyone of them faced terrific consequences when the Demo dogs (a treat from Dustin) began to invade the Hawkins Lab. Starting events from the epilogue of Episode Six, the Demo-dogs did bring havoc as Will, who was also being tortured by the shadow monster to act as the spy, tried to warn Joyce and Mike. As the invasion begins, the lab looses electricity and Bob reluctantly takes the job of getting power back on. The cinematography and camera work is played skillfully here as it moves from one screen to the other seamlessly. However, when the system reboots and they try to escape, Bob is hunted by the Demogorgon and is ultimately killed off. Such shocking gory death makes me heart-broken. And Will, who is still possessed, tactfully communes with Mike, Joyce and Hopper via Morse code which both gives a hint to the first meeting with Mike and Will and also shows the highlight of the talented young actors' acting displays. And the last bit of spoiler, Eleven aka Jane's quest really pays off as she reunites with Mike, Hopper and the others. What more can one want from an episode! Just fantastic!!

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