THE BORDER LINE is one of Walter S. Masterman's few supernatural thrillers and is one of his most hard to find novels - until now. The new edition has an introduction by John Pelan and a cover by Australian artist, Gavin L. O'Keefe.
Walter (Sydney) Masterman (1876–1946) was an English author of mystery, fantasy, horror and science fiction.
Walter S. Masterman. Wikipedia.