The scarce First Edition of this Locked Room Mystery set in Cornwall, by the Australian author of The Shrieking Pit,The Hand in the Dark,The Hampstead Mystery etc. All of which are advertised at the back of the book. 8vo. 314pps +4pps of adverts.Original embossed publishers cloth, dull and showing signs of repair. W.H.Smiths label to pastedown but no other markings. Widely available in various digitised forms the original is scarce.