Episode: 1x01 | Airdate: Sep 17, 1966
"Attack From Space"
On their first mission after being reprimanded and transferred to space patrol service, the crew of the Orion investigate an outpost gone silent and promptly discover a new extraterrestrial threat.
Episode: 1x02 | Airdate: Oct 1, 1966
"Planet Off Course"
When the Frogs send a rogue planet on a collision course to Earth, only the Orion may be able to stop it.
Episode: 1x03 | Airdate: Oct 15, 1966
"Keepers Of The Law"
The crew of the Orion investigates a mining outpost not responding to calls and discovers a problem with the robotic workforce.
Episode: 1x04 | Airdate: Oct 29, 1966
"Deserters"
A human commander tries to defect to the Frogs, later saying he doesn't remember the incident. When the Orion is ordered to the sector where it took place, similar things happen to the Orion crew and loyalties are put to the test.
Episode: 1x05 | Airdate: Nov 12, 1966
"Battle For The Sun"
Variations in the sun's energy output threaten the Earth's climate. The Orion crew investigates and discovers a long forgotten colony of humanity which may be responsible.
Episode: 1x06 | Airdate: Nov 26, 1966
"The Space Trap"
The Orion takes aboard a writer looking for inspiration for his next novel, which doesn't make things easier when the crew encounter a colony of outcasts with dangerous ambitions.
Episode: 1x07 | Airdate: Dec 10, 1966
"Invasion"
Unusual behavior by high-ranking intelligence officials makes Commander McLane suspect a conspiracy. No one listens to his warnings until it is too late: the invasion by the Frogs is already underway.
