Any authors like [ KJ Parker ] or [ Claire North ] ?? Maybe even ones like [ James Cavell ] or [ Agatha Christie ] or [ Dorothy Dunnete ]

I've included 2 Fantasy authors and 3 for non-fantasy writers

Now what do I mean by authors like these ?

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( KJ Parker and Claire North )

They both like to write Books which include Hyper-Intelligent and Extremely-Cunning characters [ especially Main Protagonists and Main Antagonists ]

Ones who are Super smart and have Very Intricate schemes and plans and adapt to Outsmarting enemies in High-Stakes situations

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Some examples :

[ Claire North ] Harry August + Kepler + others

[ KJ Parker ] Zahn + Basso + others

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( As for the other 3 )

It's also the same thing except outside of Fantasy

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Examples :

[ Dorothy ] Francis + Niccolas + others

[ James Cavell ] Toronaga + Ian Dunross + Dirk Struan + others

[ Agatha Christie ] Hercule Poirot + Miss Marple + Tommy and Trupence + others