Addie has learnt the hard way that deals with the devil are tricky things. Immortal but eternally invisible and forgotten by people, Addie exists only as a muse for artists throughout history. The only person who remembers her is the devil, who visits every year on the anniversary of their deal. Until one day, in a bookshop in New York, she meets a boy who remembers her... A Sunday Times-bestselling, award-nominated genre-defying tour-de-force of Faustian bargains.