David Vincent meets with an eminent astrophysicist who has proof that aliens are invading the planet.



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Episode cast overview:
Lloyd Lindstrom
Professor Curtis Lindstrom
Dr. Paul Mailer
The Minister
First Man
Lieutenant James
Stuart Lancaster ...
Jackie Kendall ...
Roy N. Sickner ...
Cab Driver (as Roy Sickner)
Mel Gallagher ...
Male Nurse
John Ward ...
Trooper - Sergeant
Houseboy (as Soon Taik Oh)


The eminent astrophysicist, Professor Lindstrom, has proof that aliens have landed on Earth and are planning on taking it over. He also believes the aliens are plotting to kill him. The trouble is, neither his doctor nor his son take him seriously, not even after the plane he was supposed to be in blows up in mid-air. One man believes him: David Vincent. David meets with the professor, but only after a phony preacher and a fake chauffeur fail to prevent the meeting. Meanwhile, the son suffers from debilitating headaches that have no normal cause. Written by J. Spurlin

Plot Summary | Add Synopsis


Drama | Sci-Fi | Thriller





Release Date:

17 January 1967 (USA)  »

Company Credits

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Technical Specs


Sound Mix:


Aspect Ratio:

1.33 : 1
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Did You Know?


Vincent's friend at the CIA is named Jack Ryan. See more »


David Vincent writhes in pain during the Invaders' brainwashing attempt, but the alien's screen showing an x-ray shot of Vincent's skull is motionless. See more »


David Vincent: Lloyd, I understand betraying me, but why your father? Why?
Lloyd Lindstrom: My father was an enemy. What happened to him was necessary, was all necessary. What are you afraid of? They're not going to execute you. They're just going to change your brain patterns, impose their will on yours, that's all.
See more »

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User Reviews

The show was just "getting its feet wet!"
23 October 2006 | by (Camilla, GA) – See all my reviews

"The Invaders" premiered during what-was-then-billed as ABC's "Second Season," which was coined for shows that premiered in January. The premiere installment set the stage for the events of "The Experiment," happening some time after hero David Vincent's (Roy Thinnes) initial encounter with the aliens.

A renown scientist (Laurence Naismith) has evidence that aliens have come to Earth with evil intentions. He is preparing to reveal that to a conference of respected peers. However, his son (Roddy McDowall) and personal physician (Harold Gould) have doubts about the old man's sanity, but accompany him anyway. Vincent enters the situation, after contacting the scientist and offering to help after attempts have been made on the scientist's life.

Unfortunately, Vincent doesn't prevent the aliens' plans and the scientist meets an untimely death. It is later revealed that the son has been under the control of the aliens and used as their pawn in the elimination of his father and all the proof.

A tense confrontation occurs between Vincent, the son, and aliens, under the command of a alien disguised as a priest (Dabbs Greer).

As far as the performances go, Naismith is believable as the doomed researcher and McDowall, as usual, gives a fine go at the duped son.

It's coincidental that Greer, who would later win fans with his role as "Reverend Alden" on the long-running "Little House on the Prairie," would assay another in a long string of "heavenly" roles.

7 of 7 people found this review helpful.  Was this review helpful to you?

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