January 10, 1967 to March 26, 1968
Created by Larry Cohen
A Quinn Martin Production
The series chronicles the efforts of one man, architect David Vincent, to convince a disbelieving world that Earth is being invaded by hostile aliens. The aliens have taken human form, and are nearly indistinguishable from human beings (one give-away was a stiff pinkie finger; Roy Thinnes, who played Vincent, said years later that when people recognize him, they'd immediately parade a stiff pinkie before him). In 1995, Thinnes reprised his role in a 4-hour Invaders mini-series starring Scott Bakula (of Quantum Leap fame).
- Roy Thinnes as David Vincent
- Kent Smith as Edgar Scoville (season 2)
Episode Number 2
Original Airdate: January 17, 1967
Produced by Alan A. Armer
Written by Anthony Spinner
Directed by Joseph Sargent
Guest Stars: Roddy McDowall (Lloyd Lindstrom), Laurence Naismith (Prof. Curtis Lindstrom), Harold Gould (Dr. Paul Mailer), Dabbs Greer (the minister), Lawrence Montaigne (first man), Willard Sage (Lt. James), Stuart Lancaster (superintendent), Jackie Kendall (proprietress), Roy Sickner (cab driver), Mel Gallagher (male nurse), John Ward (trooper), Soon Taik Oh (houseboy)
Dr. Curtis Lindstrom, a famed astrophysicist, has discovered proof of the aliens' existence and is determined to expose them. The aliens are equally determined to stop him. When Vincent warns Lindstrom to flee the hospital where he has taken refuge, Lindstrom's son Lloyd vehemently objects.
"... see [McDowall's] classic Invaders episode The Experiment to see what he can deliver when he's given strong material ..." — Jon Abbott, TV Zone (April 1997).