Sarah Jane and her friends go to investigate some strange lights seen over a radio telescope research centre. What they find is sinister and frightening - a Sontaran warrior, out for revenge. Can Sarah Jane, Luke, Clyde and Maria defeat this soldier of the Tenth Battle Fleet and save the world again?

 

This book is part of a book series called Sarah Jane Adventures .

There are 128 pages in this book. This book was published 2008 by Penguin Books Ltd .