An alien plant takes over Admiral Nelson in a plan to turn the Seaview into a giant greenhouse where it can take over the world.


Jerry Hopper


Irwin Allen (created by), Sidney Ellis


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Episode cast overview:
Richard Basehart ... Adm. Harriman Nelson
David Hedison ... Capt. Lee B. Crane
Terry Becker ... Chief Francis Ethelbert Sharkey
Del Monroe Del Monroe ... Kowalski
Robert Dowdell ... Lt. Comdr. Chip Morton (as Bob Dowdell)
Arch Whiting ... Sparks
Paul Trinka Paul Trinka ... Patterson
Damian O'Flynn ... Dr. Thompson
Patrick Culliton Patrick Culliton ... Dunlap (as Pat Culliton)


An alien plant takes over Admiral Nelson in a plan to turn the Seaview into a giant greenhouse where it can take over the world.

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Adventure | Sci-Fi





Release Date:

26 November 1967 (USA) See more »

Company Credits

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Technical Specs


Sound Mix:

Mono (RCA Sound Recording)



Aspect Ratio:

1.33 : 1
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User Reviews

23 August 2010 | by StuOzSee all my reviews

In the tradition of classic Outer Limits episode Specimen Unknown, comes Voyage's more cartoon-ish take on the killer-orchid-from-space-theme. This orchid takes over Nelson with evil in mind.

My first viewing of Terror was in the mid-1980s and I hated the hour! I found it totally boring? Nearly 20 years later I gave it a second viewing and loved it! Perhaps this is why so many people hate the last two seasons of Voyage/Sea, viewers make just one screening of each episode not knowing that repeated viewings are required because Irwin television is not like other television, Irwin TV casts a spell on people, a spell demanding the viewer comes back for another screening. A bit like looking at a painting on the wall I guess? Strange.

Terror is another make-something-out-of-nothing hour. The story is nothing but the hour just goes from one fun bit to another fun bit and when you put those bits all together you get a classic!

Firstly, we see a Seaview seaman - played by Patrick Culliton - who went over well when playing a seaman in Voyage season one episode: No Way Out. It is fun seeing him all this time later in a key role at the start of the show. After this, the ray of light that goes from plant to human: Great flashy visual effect! Then, great acting from Basehart as he explains that the orchid comes from deep space and he says it in such a way that the viewer almost swallows the story. Great looking explosions in the hour. And finally, Crane gets bothered by "taken over" Nelson.

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