The Bone Clocks by David Mitchell
This was longer than I ultimately wanted it to be, and the parts I really enjoyed were the regular human parts, not the more sci-fi parts. (Shocking exactly no one.) I never found the whole business with the atemporals to contribute to meaning and human understanding – it was always just a vaguely interesting idea that kept a plot going enough to tie the pieces together. I think I’d have preferred, as in Black Swan Green, to have the stories of Holly and Ed, Hugo Lamb and Crispin Hershey, just as human stories, a loose web of people whose lives intersect.