Introduced by Peter Finch to ABC Federal Controller of Productions Frank Clewlow, who was recruiting staff for the newly reconstituted Argonauts Club and its companion program "The Children's Session", he was immediately put to work developing the on-air characters of 'Mac', 'Joe' and 'Elizabeth', and concocting humorous vignettes to brighten up the show.
Mona handled his correspondence as well as scripts and quizzes for the Argosy and Brains Trust, weekend programs associated with the Argonauts.
The Moon Flower and The First Planet, science fiction serials aired in 1953, were so successful he went on to write a dozen more; all highly speculative yet incorporating important scientific principles.
It was not without its detractors, however; in 1960 the politician Sir Wilfrid Kent Hughes saw the story as subtle Communist propaganda and made a vitriolic speech to the Ballarat Young Liberals to that effect.
Mona Saunders (née Beri) (1910–1994) wrote their joint autobiography Lucky Couple, published in 1998.