Land of the Giants: Season 2, Episode 16

Nightmare (4 Jan. 1970)

TV Episode  -   -  Sci-Fi
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While working on a small nuclear reactor invented by a sympathetic giant scientist, the castaways are accidentally exposed to strange radiation that causes them to seemingly vanish or ... See full summary »



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Title: Nightmare (04 Jan 1970)

Nightmare (04 Jan 1970) on IMDb 7.1/10

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Episode cast overview:
Gary Conway ...
Don Matheson ...
Don Marshall ...
Deanna Lund ...
Heather Young ...
Betty Hamilton (credit only)
Yale Summers ...
Torin Thatcher ...
Dr. Berger


While working on a small nuclear reactor invented by a sympathetic giant scientist, the castaways are accidentally exposed to strange radiation that causes them to seemingly vanish or experience wild hallucinations. They then try to find a way to alleviate the symptoms. However, while Steve, Mark and Dan are away, an impatient Fitzhugh activates the device and it gets dangerously close to critical mass. Written by Brian Washington <>

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Release Date:

4 January 1970 (USA)  »

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Technical Specs

Sound Mix:

(RCA Sound Recording)


Aspect Ratio:

1.33 : 1
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Did You Know?


During the hallucinated fight between Steve and Mark, Steve momentarily find himself standing at the edge of a platform staring down into the seemingly bottomless core of The Time Tunnel. See more »

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Sci-Fi & Disaster
20 May 2007 | by (Sydney, Australia) – See all my reviews

The earth castaways are making attempts to get the ship back in flight when disaster happens - an explosion creates a radiation blast in the giant world causing a nightmare world where people become invisible.

"If I can't blow up the world in the first ten minutes then the show is A FLOP" - Irwin Allen.

Irwin must of loved Nightmare as the land more or less blows up in the teaser. The teaser is one of the defining moments in Irwin history as the explosive radiation blast is filmed with visual effects/sound effects/dramatics that create a feeling of total disaster! Great stuff.

Sadly, the rest of the hour does not match the quality of the teaser but we are still in for a wild ride that does the unthinkable and remakes a Voyage/Sea episode - Sealed Orders - and actually does it better! Well, better if you see the funny side that is. The "little people" SOMETIMES become invisible to the giants and this creates some mild humour that writer William Welch probably never intended. It is Kobick's bothered reactions to Berger that make me laugh. Mainly that scene where Berger lets invisible Valerie out of the cage and Kobick is outraged. For the record, Kobick's best line in the whole series happened in the teaser of year one's Seven Little Indians - "This tiny dog (Chipper) holds the key to all our problems, we will have the little people within a week, then we will be rid of them, once and for all".

The episode might be a "nightmare" to child viewers but adults will probably view it more as a mini-disaster movie that feels the need to use stock footage of The Time Tunnel core for a second or two. Why not go all the way, Irwin? A Voyage/Sea script, The Tunnel core, I am surprised "the little people" don't run into Jonathan Harris. Oh, I forgot, that DOES happen in another year two episode of Land Of The Giants. I love it.

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