First edition, first printing. Publisher's original red cloth with dark red titles and illustration to the upper board and spine, in dustwrapper. A better than very good copy, the binding square and firm, the cloth fresh with a touch of darkening at the extreme upper edge. The contents with a previous owner's bookplate and shelf stamp to the front pastedown and with his ownership inscription at the head of the title page are otherwise clean throughout. The closed top edge of the text block is somewhat spotted. Complete with the rubbed and nicked dustywrapper that has a couple of small tears but it otherwise bright and without loss. Correctly priced 2/6 net to the spine. A very scarce title in dustwrapper.
A mystery thriller of the future (1930), when all motive power is supplied by radio waves and transmitted through the ether, generated at big power stations. A professor of anti-social tendencies has invented a "Z" ray, by which all power waves can be cut out bringing human activities to a standstill. Karl Lunt kidnaps the Professor and compels him to use the ray for his own vicious ends! (Locke: A Spectrum of Fantasy; Bleiler).
Stock code: 20104