I had written in one of my ealier posts about Asimov's stories provide a detective-story fascination. The Naked Sun, written in 1957, is a very good example of this style of writing, a whodunit style story. He considers a good many possibilities of future. He had used plots and details of The Naked Sun and Caves of Steel very nicely in Foundation Series.
That reminds me I should finally start reading some Agatha Christie novels.. I have never read any of her works and I have been planning to get hold of her books for a long time.