You were sitting in your room reading a book when you received a call from an unknown number. -"Hello," you answered. -Meet me at your favorite restaurant at 8:00 p.m., you heard, and then immediately hung up. You tried to call back a few more times, but the caller was unavailable. So you had no choice but to go there. You arrived at the place designated by the stranger. After a minute of waiting, you heard a gruff voice identify itself. -Hello.