Doctor Who - The Lost Stories, Series 1, 2: Mission to Magnus (Unabridged)
Description of book
The Doctor and Peri face enemies at every turn on Magnus: the Time Lord bully Anzor, the matriarchal ruler Rana Zandusia, and Sil, bitter from defeat on Varos. And, deep within the planet, there is something else. The future is looking decidedly colder...