Reaper Man (#11 Discworld / #2 Death)

Terry Pratchett

"'Death has to happen. That s what bein' alive is all about. You're alive, and then you're dead. It can't just stop happening.' But it can. And it has. Death is missing presumed er gone (and on a little farm far, far away, a tall dark stranger is turning out to be really good with a scythe). Which leads...