The Instant Enemy by Ross Macdonald, first edition, first printing.
Octavo, 227pp, . Yellow hardcover, blue cloth spine, title stamped in gilt on spine. Stated “first edition” on copyright page. Top edge yellow stain. In the publisher’s near fine dust jacket, $4.50 on front flap, touch of shelf wear to top edge of spine, a bright example.
Part of the Lew Archer series.