Everyone knew time travel was impossible. Then reality intruded. A dying man stumbles into a police station and collapses. In his fist is a mysterious coin with strange markings. He tells the police he's from the future, and when they uncover the coin's hidden message they're inclined to believe him. Daniel Rice never asked for fame but his key role in Earth's first contact with an alien civilization thrust him into a social arena where any crackpot...