While detective John 'Jack' Robinson's alias is undercover as news reader at radio station 3JH as Archibald Jones, after four other stations were wrecked by thefts, Archie must deal with it -hoping for promotion bonus points- as murder scene, the victim being Dot's former classmate Louisa Singleton, an underestimated collaborator behind the scene of Dot's favorite daily radio fiction show. For once Jack encourages Phryne to help guide Archie, whose proposal of marriage backfires when Dot realizes he expects her to quit her job. While the sleuths investigate possible motives among staff and rivals, as well as news agent Dodger, sneakier then ever, the killer strikes again, electrocuting 'Archibald' and fatally stabbing Dodger, but links between staffers also point to a radio murders elsewhere over the previous years.
—KGF Vissers