Fifteen-year-old Daniel has followed in his parents' footsteps as the Alien Hunter, exterminating beings on The List of Alien Outlaws on Terra Firma, but when he faces his first of the top ten outlaws, the very existence of Earth and another planet are at stake.

Daniel faces dastardly Number Two, who has slowly been amassing an underground army of aliens to help him enslave Earth's population in preparation for the arrival of Number One, the most powerful alien in the universe and Daniel's arch-nemesis.

James Patterson's high-octane sci-fi adventure series comes to a white-knuckle conclusion in the final battle that Daniel X has been waiting for his entire life. In this sixth and final installment of the Daniel X series, the alien-hunting hero is finally ready to take on the biggest threat in the galaxy: The Prayer, the same beast that brutally murdered his parents long ago. But even with his incredible ability to create almost anything, Daniel will...