Seicho Matsumoto's 65yr old crime novel, Point Zero (1959/2024) is presented as the (reported) inner monologue of the wife of a missing man trying to understand his disappearance (just weeks after they have an arranged marriage). Written with a keen sense of post-war Japan, the story swirls around & around leading the reader to draw out the solution to the mystery some time before the protagonist. Lightish, but an enjoyable read.
ha ha, thanks for the typo spot - I quite like it but I think I'll correct anyway - welcome to the Chris May Typo Spotter Club - your work is every much appreciated