This note contains spoilers for the book.

Yes, that C.S. Forester. This, though, is a historical mystery. It seems to be set around the end of WWI, when the influenza was killing millions. There is remarkably little reflection of the war across the story, though, to the point that I wonder. If it was really written when the copyright says, I'd expect some effort to establish it's position in history.

It's a psychological mystery, which begins with a man killing his nephew on short notice for the money he has with him, and proceeding from there with the dissolution of the character and his family. It's not a very pleasant experience. However, it's quite well executed, so if you like that sort of thing, this might be a good piece of it to experience.