Publishers have revealed that Sue Townsend was working on another Adrian Mole book when she died.
The book would have been the tenth in a best-selling series and had a working title of Pandora's Box, a reference to Adrian's obsession with the unobtainable Pandora Braithwaite.
A spokesperson for Penguin said:
The book was planned for publication in autumn, but we have only seen a few wonderful pages.
It is not yet confirmed if the pages will ever be released to the public but discussions are likely to be held between Penguin and her family.
The 68-year-old died after a short illness yesterday.
The secret Diary of Adrian Mole achieved worldwide success and went on to sell over 20 million copies.