This... is a fine time travel book. There are some decent ideas here, and the narrative rightly springs along.

My problem with the book is that I'm guessing Kaliane Bradley isn't in any way interested in the Science Fiction genre, because there's no sense of her realising at any point that most of what's interesting here has been done to death in the genre. This is a 'literary fiction' novel, paired with some form of romance fiction, with a hackneyed and rather dull SF-lite premise.

Even apart from the poorly realised Time Travel elements, the one thing the author seems most proud of is the concept of "hereness and thereness" which she gives to her time travellers - something that Adam Roberts does to far better effect in The Thing Itself.

Just, an interesting enough book, but woefully inadequate in modern SF terms. I can't believe that this made the Hugo Shortlist, frankly.

(If you want a decent modern SFal take on Time Travel, then try Kameron Hurley's The Light Brigade.)