Between 1953 and 1958, millions of people tuned in to the radio adventures of Jet Morgan and his crew as they left earth to investigate the universe. The success of the series, reached amazing heights, retaining the record of being the last radio programme to surpass its television rival in the ratings. The series was translated into 17 languages and broadcast worldwide. Chilton went on to write three best selling novels based on the ground breaking radio series.

THE WORLD IN PERIL

An alien civilisation prepares to conquer Earth - and only four men can save her...

The great fleet was drawing near the Earth - the twenty-one leading spheres flying in crescent formation and, behind them, the others stretching back into Space for hundreds of miles...

Jet Morgan and the crew of the Discovery return to Mars on the most dangerous and vital mission ever undertaken by man - to obtain the Martian plan for the conquest of Earth. Too late, they find themselves part of the invasion fleet.