Seasons & Episodes
Beachhead
An architect's close encounter with a spaceship leads him to investigate a small town's hydroelectric plant.
The Experiment
David Vincent meets with an eminent astrophysicist who has proof that aliens are invading the planet.
The Mutation
With the assistance of Vicki, a nightclub stripper, Vincent continues his search for an alien spacecraft.
The Leeches
Vincent is called on by a renowned electronics expert who fears he may soon be abducted by alien invaders.
Genesis
Vincent's search for aliens lead him to an underwater sea lab.
Vikor
A dying telephone lineman's fantastic story leads Vincent to investigate a huge industrial complex owned by a famous war
Nightmare
Vincent travels to a small town to check a possible link between the aliens and an attack of carnivorous insects.
Doomsday Minus One
Vincent is called upon to help avert possible alien infiltration at a government nuclear test site.
Quantity: Unknown
While investigating the theft of a mysterious cylinder from the site of a plane crash, Vincent is captured and suspected
The Innocent
The aliens take David Vincent up into their spaceship and then attempt to prove they have nothing but peaceful intention
The Ivy Curtain
Vincent discovers that a school is being used by the aliens as an indoctrination center.
The Betrayed
Vincent discovers a mysterious computer tape that could offer proof of the alien invasion.
Storm
Vincent is contacted by a meterologist to help investigate the suspicious nature of a hurricane along the Eastern U.S. c
Panic
The invaders and Vincent race to capture a wounded alien whose touch brings on freezing death.
Moonshot
Vincent helps a security official investigate the deaths of two lunar astronauts in a strange red fog.
Wall of Crystal
David's brother, who also thinks he is crazy, is kidnapped by the aliens who intend to destroy the oxygen in our planet'
The Condemned
The invaders frame Vincent for the death of an owner of an electronics plant who had made discoveries about the aliens.
Condition: Red
Vincent attempts to thwart the alien infiltration of a Air Defense Command Unit.
The Saucer
Vincent battles, then destroys an alien guard and captures one of their spacecraft.
The Watchers
A hysterical hotel manager tells Vincent aliens are taking over his hotel.
Valley of the Shadow
After an alien is captured in a small town, Vincent warns the townspeople, who assume their captive is a madman.
The Enemy
Despite Vincent's warnings, a nurse tries to help an injured alien survivor of a saucer crash.
The Trial
A man seek's Vincent's aid after he is arrested and put on trial for murder after the incineration death of an alien.
The Spores
Vincent is horrified to learn the invaders are using strange seed spores that after cultivated will develop into full-gr
Dark Outpost
While investigating the Invaders susceptibility to minor human ailments, Vincent unknowingly is taken aboard an alien sp
Summit Meeting: Part I
In Part I of this two-part episode, Vincent uncovers a diabolical alien plot to destroy all of the world's leaders.
Summit Meeting: Part II
In the conclusion of a two-part episode, Vincent must defuse an experimental rocket that if ignited will destroy all hea
The Prophet
David exposes an alien disguised as a prophet who capitalizes on his ability to glow red as a tool to deceive people in
Labyrinth
When David Vincent brings an injured alien into the doctor for treatment, the patient's x-rays reveal odd results. Whil
The Captive
A Russian ambassador summons David Vincent after he finds that a burglar caught inside the embassy is an alien.
The Believers
David Vincent is kidnapped in a sneak attack on his new found alien-fighting allies, and he must try to escape an alien
The Ransom
David Vincent and Bob Torin capture an alien leader, whom they hope to show to the authorities as proof; however, the le
Task Force
David Vincent is called in to aid a huge magazine publishing company that has been experiencing disruptive behavior in i
The Possessed
An old college buddy sends David Vincent an urgent message, without any further details other than that it is important.
Counter-attack
David deceives the aliens that he is willing to work with them for a fee, all the while with a plan of attack in mind.
The Pit
Julian Reed calls upon David Vincent to help him expose aliens who have infiltrated The Slaten Research Center. By the
The Organization
David Vincent joins forces with the mob when the aliens inadvertently take their illegal shipment of drugs.
The Peacemaker
David Vincent arranges a meeting between the alien leaders and an Air Force General, who secretly plans to drop a bomb o
The Vise
Racist issues arise between David Vincent and the Baxters, a black couple, when David produces evidence that another Afr
The Miracle
In a small New Mexico town, a provincial teenage girl witnesses an alien’s incineration and believes it to be a sign f
The Life Seekers
A pair of aliens who want to return to their home planet and make a political argument against the invasion of Earth ask
The Pursued
The aliens’ experiments with artificial human emotions go awry when one of their subjects, prone to homicidal rages, d
Inquisition
David Vincent and Edgar Scoville attempt to warn a senator that a governmental official is an alien, while Andy Hatcher
