In his letters, J.R.R. Tolkien says that Williams was an influence on it. (He lamented it; he thought the influence had ruined it.)
Williams' influence actually only appeared with his death: That
Hideous Strength, the end of the trilogy, which (good though it is in
itself) I think spoiled it.
-- Tolkien's Letters, Letter 257
The most striking characteristic that Camus's The Fall / La Chute and Daoud's Meursault, contre-enquête have in common is that they are written as a second-person narrative.
In La Chute, the main character tells his story to another person whom he addresses as "vous" ("you", polite form); neither the main character nor the other person formally introduce ...