Ignatious' Black Book

Intro
A mysterious black book that cannot be written in. Ignatious' found it some years ago on one of his first archaeological digs.

Description
A medium sized, black, leather-bound book. Its pages are old and yellowed, and completely blank. Ignatious has never seen any writing in the book. It bears no sign of ownership.

Effect
The party hypothesised that the book might be one of a pair, used for sending messages.