The House of Lost Souls by F.G. Cottam is so good that I am sad thinking that many of the people who read it probably miss much of the beauty of the language. This is not a review post. In fact, I checked this book out of the library. I was so stunned by the beauty of the language in the first chapter, though, that for the first time in years, I put my life on hold to finish the book.
I guess you would call this horror, but it is more of a gothic. Fans of Dan Simmons' atmospheric works like Drood, The Terror, and The Abominable would like it. That's all I'll say. If you want a book to get lost in, try this one. Sublime.