Episode Guide
Episode Guide 
Year 1 - Episode 12 
| Screenplay by | Johnny Byrne |
| Directed by | Bob Kellett |
| Guest Artist | Barry Stokes |
| guest star | Jeremy Kemp |
| Belgium (Flemish) | De Terugkeer van reiziger | |
| France/Canada | Le retour du Voyageur | The Return Of Voyager |
| Germany | Der Mann, der seinen Namen änderte | The Man Who Changed His Name |
| Italy | Il ritorno del Voyager | The Return Of Voyager |
| Japan | Space Destroyer, Nuclear Bomb Ship | |
| Netherlands | Terugkeer van een ruimteverkenner | |
| Portugal | O Regresso do Viajante | The Return Of The Traveller |
| South Africa | Voyager Se Terugkeer | Voyager is Coming Back |
| Spain | Regreso de los viajeros | Return of the travellers |
| Sweden | Resenären | The Traveller |
Grim danger emerges from the past. Moonbase Alpha is threatened with destruction from an unmanned spacecraft sent up from Earth many years earlier, with tragedy in its wake. Even worse lies ahead from outer space victims seeking revenge.
Int. Main Mission
Int. Command Office
Int. Experimental lab
Int. Medical
Int. Alpha Corridor
Int. Eagle Pilot Section
Int. Voyager
Int. Void (Sidon ship)
2 fatalities, Ernst Queller, Abrams.
Eagle 1 (Alan); 2 (Abrams, destroyed); 4,5,6,9,10 (defence flight)
None. We learn several planets from the Federated Worlds Of Sidon were poisoned.
Archon, Chief Justifier of Sidon. Humanoid.
Contents copyright Martin Willey