"Have you ever worried about your memory, because it doesn't seem to be bringing you exactly the same picture of the past from one day to the next? Have you ever been afraid that your personality was changing because of forces beyond your knowledge or control? Have you ever felt sure that sudden death was about to jump you from nowhere? Have you ever wondered about those things you may call devils or Demons-spirits able to range through all time and space? Have you ever thought that the whole universe might be a crazy, mixed-up dream? If you have, you've had hints of the Change War." This collection gathers the original magazine versions of every canonical story in Fritz Leiber's iconic Change War time travel series for the first time. It includes an introduction by Kevin A. Straight, comprehensive Guide to the Change World, timeline of Fritz Leiber's life and works, and list of Change War apocrypha. Physical book editions include full index.