“9. Delicately Sylva moved the upper layers of paper and vellum away and saw, lying on the table, a small book. It was an ornately inscribed little volume with a beautifully worked golden motif; this was what had glittered and caught her attention. The book’s cover was edged in gold and in the centre of the cover was the motif: a letter O superimposed with the letter I, forming the symbol Φ, also marked out in gold.”