The self-styled 'Gumball King' hires Sam to discover who is sabotaging his vending machines. When the businessman is murdered, the investigation shifts from petty vandalism to homicide, with a rare quarter-eagle gold coin providing an important clue.

This The Adventures of Sam Spade broadcast aired on November 28, 1948. CBS Radio Network carried the broadcast. The cast includes Howard Duff and Lurene Tuttle.

Characters credited in this version include Sam Spade and Effie Perrine. The broadcast is also associated with Wildroot Cream-Oil.

Dashiell Hammett's private detective Sam Spade, played most famously by Howard Duff, recounts hard-boiled cases filled with murder, deception, eccentric suspects, and sharply comic dialogue.

Listeners can expect detective and crime, episodic drama in format, and hard boiled, wry, and humorous in tone.