I'm not even sure where I first heard of this book, but when I saw it pop up on the Chicago Public Library's recent additions to their ebooks, I had the vague sense that it had been recommended to me at some point as something science-fictiony.
Turns out, it was more along the lines of fantasy, though not quite, but pretty much, and also real. (That sentence pretty much sums up the vibe of the whole book.)
Now, there's nothing I hate more than a book being spoiled. This is why I infrequently write about the books I've read. Suffice to say, the story is told from the perspective of a man and a woman, mostly, in alternating chapters, mostly, and generally concerns the connections between them, and perhaps humanity in general. I really wouldn't like to say any more, part of the appeal of this book for me was being baffled for quite a while and then finally figuring out what was going on.
If you're looking for a tome to work your way through, I say it's worth a go. It was interesting enough that I feel better for having read it, and isn't that enough?