Professor Wedgwood plans another moon expedition. The crew anxiously await the last minute arrival of a Professor Hawkins. But, by a trick, amystery man takes Hawkins' place in the rocket.
The Wedgwood expedition is on its way to the Moon, but the crew do not know that one of their party is an impostor.
The impostor, Harcourt Brown, has taken control of the moon rocket and holds Margaret hostage as he heads for Mars. What can Conway Henderson do to foil this crazy plan?
Harcourt Brown, notoriousfor his wild beliefs in intelligent life on Mars, has diverted a British moon expedition to the red planet to prove his theories. After six weeks' enforced Journey, the rocket approaches the barren surface of Mars - but there is nothing solid on which to land.
This episode was broadcast live. Taken to Mars against their will, the British space explorers searchfor precious water for the long journey back to Earth.
This episode was broadcast live. With Earth movinga way from l\/lars at 20 miles a second, the explorers must leave immediately or face 16 months in the lifeless Martian desert.