Most fans of Golden Age detective fiction (GAD) will be aware of the portmanteau novel The Floating Admiral (1931) in which many luminaries of the form each contributed a chapter in turn to a murder mystery plot (pity poor Anthony Berkeley, who had to unravel all the clues and events to provide a coherent solution in the final chapter).  I’m imagining that slightly — but only slightly — fewer of you will be aware of the precursors to this novel written in the preceding year, where the same sort of approach was taken for two mysteries to be broadcast on radio.

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