For thousands of years the Sontarans and the Rutans have fought a brutal war across the galaxy.
Now the Sontarans have a secret plan to destroy the Rutan race - a secret plan the Doctor is racing against time to uncover.
Only one Rutan spy knows the Sontarans' plan. As he is chased through the galaxy in a desperate bid for his life, he reaches the planet Sentarion - where Professor Bernice Summerfield's research into the history of the Sontaran-Rutan war is turning into an explosive reality.
It is an adventure featuring the Seventh Doctor, as played by Sylvester McCoy.
- Format: Paperback
- Pages: 304 pages
- Publisher: Ebury Publishing
- Publication Date: 03/03/2014
- Category: Science fiction
- ISBN: 9781849907668