What would it take to make you kill someone? Would it take a direct threat to you or your loved ones? Could a sudden burst of anger, perhaps at a sudden and startling revelation, push you over the edge? Or could a simple email be the trigger? Glenda Davis is a peaceful woman. She lives alone. She works hard. She checks her inbox daily. She should never have opened the message titled, "Tomorrow You Kill." But some things just can't be undone. And now there's nothing peaceful about Glenda's existence. For tomorrow is nearly here.