First Edition. J. Morton Pale dustjacket art. Houghton's extremely uncommon masterpiece of psychological intrigue. This copy inscribed and signed by author at front endpaper, with actor Jean Hersholt's signed bookplate at front pastedown. 'A solitary man is hired, but never meets his employer. His only duty is to organize an extensive library while living in his employer's flat in London. Soon the callers begin arriving, people with influence and colorful lives, whom our narrator befriends through the common bond of mystery: who exactly is Jonathan Scrivener'. Very Good, top front corner bumped, some tiny cloth tears at front spine edge, in Very Good dustjacket (with 7/6 price at spine), modest soiling and wear, shallow loss at top spine end and flap corners. Includes a vintage slipcase.