Zombie Tag by Hannah Moskowitz
Thought this book was a bit of a waste of time. Assume that thirty years ago there were confirmed zombies. They found them dead in a heap, and no one knows what really happened with them. Wil's brother is dead, and he knows that there is some way to get him back. But he's worried about how he will come back. And then there's this bell, that happens to end up in a friends house, so he steals it, rings it, and brings back all of the dead within five miles. But they aren't zombies like we think. They are just a bunch of disinterested people who want to go back to their lives. No sadness, no happiness, no nothing. Yeah..