Series 1 (1975)

Breakaway
7.4

September 4, 1975 • 52m

In September 1999, John Koenig reports to Earth's Space Research Centre at Moonbase Alpha as its new commander. A strange sickness...Read more

Force of Life
4.7

September 11, 1975 • 52m

The body of Anton Zoref is invaded by an unknown life force. The man soon manifests an uncontrollable ability to absorb energy. As...Read more

Collision Course
5.2

September 18, 1975 • 52m

The Moon is on a collision course with an enormous planet. On a scouting mission, Koenig encounters Arra, the Queen of Atheria. Th...Read more

War Games
7.0

September 25, 1975 • 52m

Approaching an inhabited planet, the Alphans are suddenly pounced upon by warships. In an unprovoked attack, Moonbase Alpha is dev...Read more

Death's Other Dominion
6.5

October 2, 1975 • 52m

On a frozen planet, the Alphans encounter shipwrecked humans from a lost expedition. The expatriates from Earth enjoy an idyllic e...Read more

Voyager's Return
7.5

October 9, 1975 • 52m

The automated Earth space probe Voyager One is approaching the Moon. With the radioactive exhaust from its engine certain to extin...Read more

Alpha Child
6.0

October 16, 1975 • 52m

The Alphans celebrate the arrival of the first child born on the Moon. The blessed event sours when the infant grows into a five-y...Read more

Dragon's Domain
7.5

October 23, 1975 • 52m

In 1996, Tony Cellini commanded a high-profile space mission which ended in disaster. The sole survivor, he told an outrageous tal...Read more

Mission of the Darians
4.2

October 30, 1975 • 52m

Encountering a derelict spaceship, the Alphans respond to an automated distress signal. On board, they discover what remains of th...Read more

Black Sun
6.7

November 6, 1975 • 52m

The travelling Moon drifts within range of a black sun. Pulled toward certain destruction by its inescapable gravitational force, ...Read more

Guardian of Piri
6.5

November 13, 1975 • 52m

Strange events befuddle the Alphans as they approach the planet Piri. When exploring its lifeless surface, Koenig encounters the s...Read more

End of Eternity
6.0

November 20, 1975 • 52m

While exploring an asteroid, the Alphans injure an alien trapped within. Bringing him to Alpha, they discover his wounds have comp...Read more

Matter of Life and Death
5.5

November 27, 1975 • 52m

A lush Earth-type planet holds the promise of a new home for the people of Moonbase Alpha. When the reconnaissance Eagle returns, ...Read more

Earthbound
7.5

December 4, 1975 • 52m

An alien spacecraft crashlands on the Moon, its passengers refugees from a dying world. As their destination is Earth, they genero...Read more

The Full Circle
4.0

December 11, 1975 • 52m

When exploring a habitable planet, members of the Alphan survey party vanish without a trace. Are they the victims of an indigenou...Read more

Another Time, Another Place
7.0

December 18, 1975 • 52m

After an encounter with a space-time anomaly, the Alphans find their Moon back in the Solar System on a course to re-enter Earth o...Read more

The Last Sunset
7.0

January 1, 1976 • 52m

Anonymous alien benfactors provide the wandering Moon with a breathable atmosphere. The Alphans rejoice as they realise they have ...Read more

The Infernal Machine
8.0

January 8, 1976 • 52m

The Alphans are visited by a bizarre spacecraft, whose request for supplies hides a deeper purpose. The ship, Gwent, is found to b...Read more

Ring Around the Moon
5.5

January 15, 1976 • 52m

A technician falls under an alien influence, accessing classified information before mysteriously dying. Soon after, the Moon is s...Read more

Missing Link
5.0

January 22, 1976 • 52m

John Koenig finds himself trapped on the planet Zenno, in the home of an alien scientist and his daughter. Advanced two million ye...Read more

Space Brain
6.0

January 29, 1976 • 52m

An Eagle and its crew are crushed to death by an enormous energy field in space. When one of Alpha's astronauts is possessed by th...Read more

The Troubled Spirit
3.0

February 5, 1976 • 52m

Dan Mateo, hoping to unlock the secret of communication with plants, unleashes a killing force from the depths of his own mind. Th...Read more

The Testament of Arkadia
7.0

February 12, 1976 • 52m

The wandering Moon suddenly changes course and comes to a halt in the vicinity of a dead world. As Alpha's power fails, the only h...Read more

The Last Enemy
9.0

February 19, 1976 • 52m

The Moon approaches a solar system with two planets on opposites sides of its sun. The Alphans are trapped in an interplanetary co...Read more