The Adventures of Sam Spade was a radio series based loosely on the private detective character Sam Spade, created by writer Dashiell Hammett. The show was known for its action-packed content, filled with dames, wisecracks, adventure, and laughs. Specific details about the episode 'The Chargogagamog Caper' are not available. However, typical episodes of 'Sam Spade' involved the main character, private detective Sam Spade, solving a variety of mysteries in a tongue-in-cheek, action-packed style.