As part of its monthly book club, the Guardian hosts a live discussion between the author of the book in question and UCL professor of English, John Mullan.
This month's book is Ruth Rendell's The Keys to the Street, her 1996 crime thriller about a woman whose life is dramatically changed when she donates bone marrow to save the life of a man she does not know.
In the first of his weekly columns on the book, John Mullan explored the setting of the book - London's Regent's Park - and argued that it held the key to the narrative's almost hidden pattern.
Professor Mullan will be discussing the book with Ruth Rendell at next week's book club event on Wednesday January 21 at the Newsroom, 60 Farringdon Road, London EC1R 3ER. Doors open at 6.30pm and entry costs £8. To book a ticket call 020 7886 9281 or email book.club@theguardian.com. For those who can't make it on the night, the conversation will also be available as a podcast.
In the meantime, we want to know what you think of the book. A selection of your posts will appear in the Guardian Review in Prof Mullan's final column on the novel.
