This story is credited as an adaptation of a Jacques Futrelle story, but doesn't identify which story. "Diogenes, Inc." isn't listed in any Futrelle bibliography I can find. I also can't find any reference to the protagonists outside of this episode.
I suppose it might be based on a Thinking Machine story with original characters substituted for the original protagonist, but that's just a guess.
The one thing that is certain is that Alfredo Pinto and Selma (the two detectives in the episode) are awesome. Had this show been broadcast during the Golden Age of Radio, they would have been great characters for a continuing series.
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