London: Methuen, 1907. First Edition. Decorative Cloth. Near Fine+. First Impression (one of only 2500 copies), First Issue ("be be" on final line of p. 117, six additional text error as noted by Smith, and publisher's catalogue dated September 1907), of the "earliest and best novel portraying the character and fate of a double agent." (Barzun & Taylor) Crown 8vo: [6],442,[2],40pp. Publisher's ruby-red bold-ribbed cloth, spine lettered and ornamented in gold, fore- and bottom edges untrimmed; bookplate of A. Beresford Ryley to front paste-down. Foxing to front blank, small gutter stain (not affecting text) to pp. 212-17, faint rubbing to spine edges, else an excellent example and scarce such. Keating 73-74. Wise 17. Connolly 15 ("Conrad's greatest heroine.").Cagle A12a(1). Barzun & Taylor 903. Haycraft-Queen cornerstone. Ehrsam, p. 304. Smith 13. Modern Library 100, 46. A tale of anarchists in late nineteenth-century London, which originally appeared serially in Ridgeway's…