The Instant Enemy by Ross Macdonald (Kenneth Millar) (Alfred A. Knopf, Inc., 1968). Cover Art by Muni Lieblein. #TheInstantEnemy #RossMacdonald #KennethMillar #1960s #book #books #coverart #artwork #cover #LewArcher #MuniLieblein #Crime #MYSTERY #thriller #thrillers #thrillerbooks #AlfredAKnopf