Shada
Adams, Douglas / Russell, Gary![Shada](https://support.digitalhusky.com/media/annotations/sorted/175/17589289/CHSBZCOP0317589289.jpg)
Reunited with his old friends Romana and K9, the Doctor answers a summons from Professor Chronotis, a retired Time Lord now living in Cambridge, where the sinister alien Skagra is intent on stealing an ancient and mysterious book...