London, 1870. Lucy Braithwhite lives a privileged existence as heir to the fortune of Braithwhite & Company – the most successful purveyor of English luxury wallpapers the world over. The company’s formulas have been respected for nearly a century, but have always remained cloaked in mystery. No one has been able to explain the originality of design, or the brilliance of their colours, leaving many to wonder if the mysterious spell-like effect of their wallpapers is due simply to artistry, or something more sinister. When Mr Luckhurst, the company’s manager, and the man who has acted as surrogate father to Lucy and her invalid brother John since they were children, suddenly dies, Lucy is shocked to discover that there is no succession plan in place. Who will ensure that the company and her family continue to thrive?