The TARDIS crash-lands on an uncharted time reef. However, the Doctor, Nyssa and Brewster are not the only mariners marooned on this barren rock. And there's something else here, too. A thing of darkness crawling blindly, hunting for prey: the Ruhk.
- Format: CD-Audio
- Publisher: Big Finish Productions Ltd
- Publication Date: 30/09/2008
- Category: Science fiction
- ISBN: 9781844353224