This Avengers story was transmitted on Springbok Radio and sadly no
recording of it is known to exist today.
No details are known about this
serial, the production of which has been confirmed from an
annotated television script of the episode, which confirms the
episode title change for radio and the number of episodes.
The number of episodes (5)
places this serial firmly in the early days of the series when
Tony Jay was adapting and directing the serials. His replacement
Dennis Folbigge favoured serialisations over six or seven
The script also confirms that
the radio serial had the working title, An Old Fashioned Murder.