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Very alien visitors to our galaxy attempt to connect with human consciousness but miss, winding up tapping into the regions of human nightmares instead.


Joseph Pevney


Gene Roddenberry (created by), Robert Bloch




Episode complete credited cast:
William Shatner ... Capt. Kirk
Leonard Nimoy ... Mr. Spock
DeForest Kelley ... Dr. McCoy
Antoinette Bower ... Sylvia
Theodore Marcuse ... Korob (as Theo Marcuse)
James Doohan ... Scott
George Takei ... Sulu
Nichelle Nichols ... Uhura
Walter Koenig ... Chekov
Michael Barrier Michael Barrier ... DeSalle (as Mike Barrier)
John Winston John Winston ... Transporter Chief
Rhodie Cogan Rhodie Cogan ... First Witch
Gail Bonney ... Second Witch
Maryesther Denver Maryesther Denver ... Third Witch
Jay D. Jones Jay D. Jones ... Crewman Jackson (as Jimmy Jones)


When Captain Kirk and his landing party arrive on Pyrus VII, they are met by eerie mists, a dark castle, wailing witches, zombies and a black cat. They soon learn that they are under the influence of a wizard, Korob, who tries to bend them to his will. They also soon learn that the black cat they saw is more than she appears and is in fact a powerful witch in her right. This beautiful witch, Sylvia, who wears a diamond pendant on her black dress, explains that they are explorers from another galaxy. However, Kirk and Spock must find a means to escape their grasp before they return to the Enterprise. Written by garykmcd

Plot Summary | Plot Synopsis


TV-PG | See all certifications »

Parents Guide:

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Did You Know?


The Three Witches are iconic characters from William Shakespeare's Macbeth, a play which inspired frequent allusions throughout this series. See more »


Obvious wig on Chekov (see trivia). See more »


Korob: I have the power!
Sylvia: But you're afraid to use it...
See more »

Alternate Versions

Special Enhanced version Digitally Remastered with new exterior shots and remade opening theme song. Highlights include a wider establishing shot showing the entire castle, not just the front door. See more »

User Reviews

Pay attention to the premise!
28 February 2018 | by talonjensenSee all my reviews

If you understand the premise of this episode, that the black cat, witches, zombies skeletons, magic, etc. were derived from the aliens' mistaken interpretation of human nightmares, rather than human reality, then, this episode does make sense.

In trying to understand humans the aliens tapped into human nightmares which evidently do not occur in the alien species. So, they present the Star Trek cast with these black magic nightmares, assuming they are part of the human paradigm.

Still, it is done in a little campy, silly style which was common in the sixties. Nevertheless, I first watched this as a child and still love it. One of my big pet peeves about TV series is the lack of story diversity and I never felt that about Star Trek, this episode is a perfect example. Even as a child I understood that special effects in TV series was laughable (movies not much better), but I still dream of traveling the stars. The wonder of Star Trek and traveling is always meeting someone new and learning new things, it goes a long way to reducing bigotry and increasing compassion.

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Official Sites:

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Greek | English

Release Date:

27 October 1967 (USA) See more »

Company Credits

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Technical Specs


Sound Mix:

Mono | Dolby Digital (re-mastered version)| DTS (re-mastered version)


Color | Color (Technicolor)

Aspect Ratio:

1.33 : 1
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