London, Gollancz, 1931. First Edition. First Impression. Hardback. A very good copy. Mystery novel, with fantasy elements. In Bleiler as imaginary playmates [Bleiler, p19]. "Science fantasy of the creation of other personalities" [Locke, I:p30]. Spine toned, offsetting to endpapers, a couple of nicks, otherwise a respectable copy. [8150, Hyraxia Books].