To Say Nothing of the Dog is a time travel novel with a twist. Most of the story takes place in Victorian England as a pair of historians try to manipulate romance to avoid what could be a serious temporal incongruity.
The historians originate from 2057 and are focused on one particular item that was in the cathedral in Coventry when it was destroyed by the Nazis in 1940. If you enjoy mystery, romance, and lots of humor this is a great book. I do wish it read less like a Victorian romance novel and more like the science fiction I thought I was getting, but I enjoyed the book. Highly recommended.