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The crew of Moonbase Alpha must struggle to survive when a massive explosion throws the Moon from orbit into deep space.
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Episodes
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- E1 BreakawayNext upSep 4, 1975 · 52 min · ★ 7.6
Synopsis
In September 1999, John Koenig reports to Earth's Space Research Centre at Moonbase Alpha as its new commander. A strange sickness is killing some of the Moonbase Alpha crew. Commander Koenig's investigation reveals that the source lies at Nuclear Waste Disposal Area 1 caused by excessive magnetic energy fields. The continuous build up of energy shortly causes massive explosion clusters that knocks the moon off orbit into deep space.
Guest stars: Philip Madoc (Commander Gorski), Valerie Van Ost (Main Mission Operative), Don Fellows (GTV Newscaster), Eric Carte (Collins), Lon Satton (Benjamin Ouma), Roy Scammell (Jim Nordstrom), Laurie Davis (Stewardess), Shane Rimmer (Eagle Pilot (voice))
- E2 Force of LifeSep 11, 1975 · 52 min · ★ 6.0
Synopsis
The body of Anton Zoref is invaded by an unknown life force. The man soon manifests an uncontrollable ability to absorb energy. As the Alphans struggle to understand this mysterious force, Zoref's need becomes insatiable. Driven by instinct, he makes his way to the greatest source of energy on Alpha: the Nuclear Generating Plant.
Guest stars: John Hamill (Dominix), Eva Reuber-Staier (Jane), Lea Brodie (Hilary Preston), Ian McShane (Anton Zoref), Gay Hamilton (Eva Zoref), Emily Bolton (June), Sarah Bullen (Kate), Alan Harris (Main Mission Operative (uncredited))
- E3 Collision CourseSep 18, 1975 · 52 min · ★ 6.4
Synopsis
The Moon is on a collision course with an enormous planet. On a scouting mission, Koenig encounters Arra, the Queen of Atheria. The aged monarch proclaims the collision is a preordained event and must occur for her people to evolve to a higher plane of existence. Now Koenig must convince his staff to have faith and do nothing in the face of apparent destruction.
Guest stars: Margaret Leighton (Arra), Sarah Bullen (Kate), Alan Harris (Main Mission Operative (uncredited)), Alf Joint (Alphan on Balcony (uncredited)), Annie Lambert (Main Mission Operative Julie Tracy (uncredited))
- E4 War GamesSep 25, 1975 · 52 min · ★ 7.0
Synopsis
Approaching an inhabited planet, the Alphans are suddenly pounced upon by warships. In an unprovoked attack, Moonbase Alpha is devastated by Earth-style Hawk fighters. With 128 dead and Alpha unable to sustain life, Koenig and Helena appeal to the aliens for mercy. The aliens proclaim the Earthmen to be an invading virus, with no right to exist.
Guest stars: Anthony Valentine (Male Alien), Isla Blair (Female Alien), James Fagan (Ken Johnson), Sarah Bullen (Kate), Alan Harris (Main Mission Operative (uncredited))
- E5 Death's Other DominionOct 2, 1975 · 52 min · ★ 6.8
Synopsis
On a frozen planet, the Alphans encounter shipwrecked humans from a lost expedition. The expatriates from Earth enjoy an idyllic existence: they have been made immortal and have lived there for over 880 years. They invite the Alphans to join them in paradise, but dissidents reveal all is not at it seems, teaching Koenig that immortality comes with a price.
Guest stars: Mary Miller (Freda), David Ellison (Ted), Brian Blessed (Cabot Rowland), John Shrapnel (Jack Tanner), Sarah Bullen (Kate), Robert Driscoll (Revered One (uncredited))
- E6 Voyager's ReturnOct 9, 1975 · 52 min · ★ 8.0
Synopsis
The automated Earth space probe Voyager One is approaching the Moon. With the radioactive exhaust from its engine certain to extinguish all life on Moonbase, the Alphans try to gain control and shut down the drive. Help comes when the probe's designer is found living on Alpha under an assumed name. However, Voyager is being followed by alien ships seeking revenge.
Guest stars: Alex Scott (Aarchon), Lawrence Trimble (Steve Abrams), Jeremy Kemp (Ernst Linden), Sarah Bullen (Kate), Alan Harris (Alphan (uncredited))
- E7 Alpha ChildOct 16, 1975 · 52 min · ★ 5.8
Synopsis
The Alphans celebrate the arrival of the first child born on the Moon. The blessed event sours when the infant grows into a five-year-old child in minutes. Trying to accept him, the Alphans do not notice that little Jackie Crawford is much more than he seems. When hostile spaceships approach the base, Koenig realises, too late, that the aliens have an agent on Alpha.
Guest stars: Rula Lenska (Joan Conway), Wayne Brooks (Jackie), Julian Glover (Jarak), Cyd Hayman (Sue Crawford), Sarah Bullen (Kate)
- E8 Dragon's DomainOct 23, 1975 · 52 min · ★ 8.2
Synopsis
In 1996, Tony Cellini commanded a high-profile space mission which ended in disaster. The sole survivor, he told an outrageous tale of a spaceship graveyard and an alien 'dragon' which devoured his crew. Believed by no one, he was left a broken man. Five years later, the truth is revealed when the runaway Moon approaches the same deadly Sargasso in space.
Guest stars: Barbara Kellerman (Monique Bouchere), Michael Sheard (Darwin King), Susan Jameson (Juliet Mackie), Gwen Taylor (Nurse), Gianni Garko (Tony Cellini), Douglas Wilmer (Commissioner Dixon), Sarah Bullen (Kate)
- E9 Mission of the DariansOct 30, 1975 · 52 min · ★ 5.3
Synopsis
Encountering a derelict spaceship, the Alphans respond to an automated distress signal. On board, they discover what remains of the once-great civilisation of Daria: an elite group which maintains control of the ship and a tribe which has descended into savagery. The Alphans are appalled when they discover what measures the Darians have taken to survive.
Guest stars: Joan Collins (Kara), Dennis Burgess (Neman), Aubrey Morris (Petros High Priest), Paul Antrim (Bill Lowry), Robert Russell (Hadin), Gerald Staddon (Male Mute), Jackie Horton (Female Mute), Louise Jameson (Survivor)
- E10 Black SunNov 6, 1975 · 52 min · ★ 6.6
Synopsis
The travelling Moon drifts within range of a black sun. Pulled toward certain destruction by its inescapable gravitational force, the Alphans employ desperate measures to stay alive. As a lifeboat Eagle carries six persons to safety, the Moon plunges into the black sun, with only an experimental forcefield protecting Alpha.
Guest stars: Paul Jones (Mike Ryan), Jon Laurimore (Smitty), Jan Harvey (Alpha News Service Girl), Alan Harris (Main Mission Operative (uncredited))
- E11 Guardian of PiriNov 13, 1975 · 52 min · ★ 6.8
Synopsis
Strange events befuddle the Alphans as they approach the planet Piri. When exploring its lifeless surface, Koenig encounters the seductive servant of the mysterious Guardian of Piri. She offers the wayward Alphans a life of peace and perfection. Realising the deadly truth behind the peace of Piri, Koenig struggles to free his people from the Guardian's influence.
Guest stars: Catherine Schell (Servant of the Guardian), Gareth Hunt (Eagle Pilot (uncredited)), Michael Culver (Pete Irving), Emily Bolton (June), Alan Harris (Main Mission Operative (uncredited))
- E12 End of EternityNov 20, 1975 · 52 min · ★ 6.7
Synopsis
While exploring an asteroid, the Alphans injure an alien trapped within. Bringing him to Alpha, they discover his wounds have completely healed. The indestructible Balor is a scientist whose people had discovered the secret of immortality. Balor is a psychopath, offering a drastic solution to his people's apathy; now freed of the eternal prison, he plans to spend eternity practicing the art of pain and torture, with the Alphans as his subjects.
Guest stars: Peter Bowles (Balhor), James Smillie (Baxter), Sarah Bullen (Kate), Alan Harris (Patient (uncredited))
- E13 Matter of Life and DeathNov 27, 1975 · 52 min · ★ 6.0
Synopsis
A lush Earth-type planet holds the promise of a new home for the people of Moonbase Alpha. When the reconnaissance Eagle returns, it carries an unexpected passenger: Helena's husband, who died five years ago. The mysterious Lee Russell tells the Alphans that death awaits them on the new planet. The Alphans ignore his warning and unknowingly descend into a world of antimatter.
Guest stars: Richard Johnson (Lee Russell), Stuart Damon (Parks), Shane Rimmer (Bannion (voice)), Alan Harris (Main Mission Operative (uncredited))
- E14 EarthboundDec 4, 1975 · 52 min · ★ 6.5
Synopsis
An alien spacecraft crashlands on the Moon, its passengers refugees from a dying world. As their destination is Earth, they generously offer to take one person with them when they depart. The scheming Commissioner Simmonds takes steps to ensure that he is the lucky individual chosen, even if it means destroying Alpha.
Guest stars: Christopher Lee (Captain Zandor), Emily Bolton (June), Sarah Bullen (Kate), Roy Dotrice (Gerald Simmons)
- E15 The Full CircleDec 11, 1975 · 52 min · ★ 4.7
Synopsis
When exploring a habitable planet, members of the Alphan survey party vanish without a trace. Are they the victims of an indigenous tribe of Stone Age humanoids? The mystery deepens when a dead caveman is found to have capped teeth. Others soon notice the primitive cave chief and his mate bear an uncanny resemblance to the missing John Koenig and Helena Russell.
Guest stars: Oliver Cotton (Spearman), Alan Meacham (Sandos)
- E16 Another Time, Another PlaceDec 18, 1975 · 52 min · ★ 7.0
Synopsis
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 orbit. The celebration ends when it becomes apparent Earth is an inhospitable wasteland. The mystery deepens when they discover a duplicate Moon already in orbit and a duplicate Moonbase Alpha lying empty and deserted.
Guest stars: Judy Geeson (Regina Kesslan), Emily Bolton (June), Alan Harris (Main Mission Operative (uncredited)), Robert Phillips (Main Mission Operative (uncredited))
- E17 The Last SunsetJan 1, 1976 · 52 min · ★ 7.0
Synopsis
Anonymous alien benfactors provide the wandering Moon with a breathable atmosphere. The Alphans rejoice as they realise they have a wonderful new home in their own backyard. Preparations are made to settle and begin building a new civilisation on the Moon's surface. Koenig is suspicious of the aliens' motives, wondering how long this generous gift will last.
Guest stars: James Fagan (Ken Johnson), Sarah Bullen (Kate), Alan Harris (Main Mission Operative (uncredited)), Alf Joint (Security Guard (uncredited))
- E18 The Infernal MachineJan 8, 1976 · 52 min · ★ 6.7
Synopsis
The Alphans are visited by a bizarre spacecraft, whose request for supplies hides a deeper purpose. The ship, Gwent, is found to be sentient, the attempt of a vain alien genius to live forever. Powerful, unstable and craving companionship, Gwent intends for Koenig, Helena and Bergman to replace its aged, dying creator.
Guest stars: Leo McKern (Companion), Gary Waldhorn (Winters), Sarah Bullen (Kate)
- E19 Ring Around the MoonJan 15, 1976 · 52 min · ★ 5.5
Synopsis
A technician falls under an alien influence, accessing classified information before mysteriously dying. Soon after, the Moon is stopped in space by the powerful rays of an alien spacecraft. The aliens' only interest in Alpha is the data held in its computers, information they now plan to obtain through the possessed eyes of their next agent: Helena Russell.
Guest stars: Max Faulkner (Ted Clifford), Alan Harris (Main Mission Operative (uncredited)), Robert Phillips (Main Mission Operative (uncredited))
- E20 Missing LinkJan 22, 1976 · 52 min · ★ 4.7
Synopsis
John Koenig finds himself trapped on the planet Zenno, in the home of an alien scientist and his daughter. Advanced two million years beyond Earthmen, the aliens consider Koenig their missing link. Faced with the threat of being treated like an experimental animal for the rest of his life, Koenig uses an unexpected weapon to confound his captor: love.
Guest stars: Joanna Dunham (Vana), Peter Cushing (Raan), Emily Bolton (June), Alan Harris (Main Mission Operative (uncredited)), Robert Phillips (Main Mission Operative (uncredited))
- E21 Space BrainJan 29, 1976 · 52 min · ★ 6.0
Synopsis
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 the anomaly, he tells them the energy field is a living space brain, which responded to the 'threat' with antibodies Finding the Moon on a collision course with the Brain, the Alphans make plans to avoid the same fate as the Eagle.
Guest stars: Shane Rimmer (James Kelly), Carla Romanelli (Melita Kelly), Derek Anders (Wayland), Sarah Bullen (Kate)
- E22 The Troubled SpiritFeb 5, 1976 · 52 min · ★ 6.0
Synopsis
Dan Mateo, hoping to unlock the secret of communication with plants, unleashes a killing force from the depths of his own mind. This macabre spectre seeks vengeance for Mateo's horrible death—which has not yet occurred. Bridging the span between science and the supernatural, the Alphans hope to break the cycle and exorcise the ghost without killing the man.
Guest stars: Giancarlo Prete (Dan Mateo), Hilary Dwyer (Laura Adams), Anthony Nicholls (James Warren), Sarah Bullen (Kate)
- E23 The Testament of ArkadiaFeb 12, 1976 · 52 min · ★ 8.0
Synopsis
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 hope for survival is to evacuate to the planet, which was ravaged by a nuclear war in the distant past. Searching for answers, a team is sent to the surface, where they discover the shocking truth of the origin of Mankind.
Guest stars: Orso Maria Guerrini (Luke Ferro), Lisa Harrow (Anna Davis), Shane Rimmer (Eagle Pilot (voice))
- E24 The Last EnemyFeb 19, 1976 · 52 min · ★ 8.7
Synopsis
The Moon approaches a solar system with two planets on opposites sides of its sun. The Alphans are trapped in an interplanetary conflict when warships from both worlds trespass on the Moon to fire missiles at their opponents' planets. After taking in a refugee from a destroyed gunship, the Alphans discover they have drifted into the middle of a literal war of the sexes.
Guest stars: Caroline Mortimer (Dione), Maxine Audley (Theia), Kevin Stoney (Talos), Carolyn Courage (Prima ragazza), Claire Lutter (Main Mission Operative (uncredited)), Andy Sutcliffe (Main Mission Operative (uncredited)), Laurie Davis (Main Mission Operative (uncredited)), Andy Dempsey (Main Mission Operative (uncredited))
Cast & crew
Created by Sylvia Anderson, Gerry Anderson
Martin Landau
Barbara Bain
Catherine Schell
Tony AnholtVideos
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