'Described as the "Extraordinary Case of Sound Without Sight," this is an involved story of three murders, the first of which was committed In a locked broadcasting studio during the production of a radio play. The plot is ingenious and its Investigators are led on many false trails before arriving at the solution. Interesting details of radio production are given by Mr. Afford, who, by the way, is a playwright employed by the Australian Broadcasting Commission.'
Source:
'Book Reviews in Brief', The Argus, 4 December 1937, p.17 [weekend magazine].