The time has come again for some nerdy Golden Age Detection podcasting, and James Scott Byrnside is here to oblige with a discussion about some of the tropes we know and love from GAD fiction
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John Sladek is better known these days as a furiously inventive author of decidedly loopy SF — and I mean that as a compliment — but he did publish two detectives novels in the 1970s that each contained several impossibilities. The first, Black Aura (1974), has two disappearances and a man flying outside a third-storey window (without anything so amateur as wires holding him up, you cynic), and two-thirds of these are explained away superbly — the second disappearance in particular. It is a very good book, if perhaps a little slow in places, and boded well for the next time Sladek opted to dip his toe in our waters. Invisible Green, then, is very much the realisation of this potential, being superior in every single respect, and therefore something of a bittersweet read as we know now that nothing else followed it in the realm of the unachievable provably done.
Declaring that the detective novel was the only form of literature that put the reader to work, [S.S. van Dine] argued that “a deduction game emphasising fair play within a limited setting” would be the story structure with the best potential to result in masterpiece mystery stories […] But when the elements of the game are too severely limited and the building materials are all the same, only the first few builders will get all the glory and there will be an over-abundance of similar novels…
—Soji Shimada, in his introduction to The Moai Island Puzzle
