The Black Widower stories always reminded me of Sherlock Holmes, which I love, but with less running around. Half of this collection is Black Widower and half are Union Club mysteries which I never liked quite as well. Here's what the author says about his mystery stories:
"Almost every mystery story I write belongs to the 'armchair detective' variety. Our hero listens to a puzzling story of some kind that seems to have no solution and, taking into account only what he is told, comes up with the answer in so cogent a fashion that every other character in the story (and the reader, too) is at once convinced of its legitimacy....
My stories are, in short, not exercises in violence, not thrillers, not psychological suspense stories. They are, generally speaking, puzzles, and rather intellectual ones."