It started with James losing Sarah, but nothing stays so simple. What’s “lost,” anyway? Is it like a file being deleted from your hard drive? Because the file isn’t really gone. It’s out of sight, sure, but it’s still there, and as any white-collar crook can tell you, a file can come back to haunt you. While finishing Sarah’s magnum opus, a program called Alithea, James becomes immersed in her past. He finds out about Raven and Marie, two childhood friends Sarah had never mentioned. Both women hide secrets, though in Marie’s case, that isn’t unexpected. After all, she’s been dead for seven years. James soon begins to question both his conception of reality and his own sanity. Is death far less final than we think, or has losing Sarah made him as buggy as a beta version?