The "Journey into Space" saga was rightly described as "the first really successful science-fiction series on radio". It followed the adventures of "Jet", "Mitch", "Doc" & "Lemmy", four intrepid astronauts who, in the first story, "Operation Luna" (recorded in the Mid-Fifties, but set in "far-off" 1965) became the first humans to land on the moon, and subsequently experienced an incredible adventure, together.
The second and third stories to be recorded (- also in the Fifties -), were "The Red Planet" and "World in Peril", respectively. "The Red Planet" told of the team's eventual, successful landing on the planet Mars, while the third adventure concerned the discovery of hostile Martian life-forms by the team, and the Martian's subsequent intention to conquer and subjugate all Earthlings.
This is a 1981 sequel to "The World in Peril", by the same writer - Charles Chilton - who authored the three Fifties stories. The 1981 cast are :-
John Pullen as "Captain 'Jet' Morgan" ;
Nigel Graham as "Engineer 'Mitch' Mitchell" ;
Ed Bishop (a US-born actor, famous in the Late Sixties both for providing the voice of Captain Blue in Gerry Anderson's puppet series, "Captain Scarlet", and also for playing Commander Straker in Anderson's first human-actors series, "UFO") as " 'Doc' Matthews" ;
and, Anthony Hall as "Radio Operator 'Lemmy' Barnett".