On January 17, 1946, Joseph Cotten starred in the Suspense episode "the Pasteboard Box," in which he portrays a man who kills his twin brother and assumes his place. You can download the episode from archive.org here.
The episode derives its title from the box which Cotten places his brother's decapitated head inside. In fact, he completely eviscerates his brother's corpse in order to dispose of it. Pretty ghastly stuff for a prestige CBS radio drama, no? And yet, the details of the dismemberment are left to the audience's imaginations. Their sick, twisted, macabre imaginations.
Tomorrow: "Th-they're like naughty children in a classroom! Whispering, fidgeting and laughing behind their teacher's back but blandly innocent when his gaze is turned upon them..."