E1 - Beachhead

Aired: January 10, 1967

An architect's close encounter with a spaceship leads him to investigate a small town's hydroelectric plant.

E2 - The Experiment

Aired: January 17, 1967

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

E3 - The Mutation

Aired: January 24, 1967

With the assistance of Vicki, a nightclub stripper, Vincent continues his search for an alien spacecraft.

E4 - The Leeches

Aired: January 31, 1967

Vincent is called on by a renowned electronics expert who fears he may soon be abducted by alien invaders.

E5 - Genesis

Aired: February 07, 1967

Vincent's search for aliens lead him to an underwater sea lab.

E6 - Vikor

Aired: February 14, 1967

A dying telephone lineman's fantastic story leads Vincent to investigate a huge industrial complex owned by a famous war hero.

E7 - Nightmare

Aired: February 21, 1967

Vincent travels to a small town to check a possible link between the aliens and an attack of carnivorous insects.

E8 - Doomsday Minus One

Aired: February 28, 1967

Vincent is called upon to help avert possible alien infiltration at a government nuclear test site.

E9 - Quantity: Unknown

Aired: March 07, 1967

While investigating the theft of a mysterious cylinder from the site of a plane crash, Vincent is captured and suspected of being an alien.

E10 - The Innocent

Aired: March 14, 1967

The aliens take David Vincent up into their spaceship and then attempt to prove they have nothing but peaceful intentions by showing him what they've done to a desert valley. But all is not what it seems.

E11 - The Ivy Curtain

Aired: March 21, 1967

Vincent discovers that a school is being used by the aliens as an indoctrination center.

E12 - The Betrayed

Aired: March 28, 1967

Vincent discovers a mysterious computer tape that could offer proof of the alien invasion.

E13 - Storm

Aired: April 04, 1967

Vincent is contacted by a meterologist to help investigate the suspicious nature of a hurricane along the Eastern U.S. coast.

E14 - Panic

Aired: April 11, 1967

The invaders and Vincent race to capture a wounded alien whose touch brings on freezing death.

E15 - Moonshot

Aired: April 18, 1967

Vincent helps a security official investigate the deaths of two lunar astronauts in a strange red fog.

E16 - Wall of Crystal

Aired: May 02, 1967

David's brother, who also thinks he is crazy, is kidnapped by the aliens who intend to destroy the oxygen in our planet's air.

E17 - The Condemned

Aired: May 09, 1967

The invaders frame Vincent for the death of an owner of an electronics plant who had made discoveries about the aliens.