1 9 6 3 (UK)
7 x 25 minute episodes
In the Maxwell laboratory, an exciting new experiment is underway – ‘Project Emerald Soup’ – but unexpected results occur. The Maxwell children discover that mysterious parties are interested.
A radiation panic forces the Maxwells out of their laboratory and the children try to locate the source of mysterious radio messages they have been receiving.
Jessica Maxwell
Jessica Spencer
John Maxwell
William Dexter
Penny Dalton
Annette Andre
Tim Maxwell
Gregory Phillips
Jo Maxwell
Janina Faye
Gally Lloyd
Karl Lanchbury
Poynter
Michael Bangerter
Mrs Evans
Ethel Gabriel
Gaunt
Allan McClelland
Lee
Fredric Abbott
Pascoe
Blake Butler
