New York, Knopf, 1956. Second printing. INSCRIBED by author to front free endpaper: For [name]/in meaningful times/Jocelyn Davey/or Chaim Rafael and dated August 1957. Erudite Oxford don Ambrose Usher is sent to Washington DC to investigate a security leak at the Embassy. Then--a murder at the Ambassador's Guy Fawkes party! Along with everyone else at the party, Usher finds himself a suspect, along with Palmerston the cat. Wear to spine ends. Dust jacket shows wear with chipping and tiny open tears to extremities. $25.00.