From 22 August 1948 on CBS, Howard Duff stars as Dashiell Hammett's hard-boiled private eye Sam Spade in 'The Vaphio Cup Caper.' A priceless ancient Greek gold cup pulls Sam into a tangle of collectors, forgers, and characters who'd happily put a slug in him for it -- with Lurene Tuttle's Effie Perine at the typewriter catching every wisecrack. Classic William Spier-produced detective radio at its sharpest.