The Book of Rassilon

The Book of Rassilon was a book that contained interpretations of Rassilon, Omega and the Other. (PROSE: Lungbarrow) Like many religious texts, it started with "In the beginning...". The Doctor believed he may have helped write it, but admitted he could be thinking of the Bible. (PROSE: Cat's Cradle: Witch Mark)

A "parable" in the book spoke of the lost moon of Botoya and its reality altering powers, a passage that sent Gostak on a quest to find the missing satellite. (AUDIO: The End of the Beginning)

Behind the scenes

 * The Book of Rassilon was first mentioned in 1987 (five years prior to the release of Cat's Cradle in the short story TARDIS Stolen!, from The Doctor Who Fun Book, where the Master attempts to blacken the First Doctor's reputation by noting that one line of the Book states "Beware of men in white wigs". However, due to its parodical nature, this story is not currently considered valid on this Wiki.