<p>**THE INSTANT <i>SUNDAY TIMES</i> BESTSELLING DEBUT AND ONE OF THE BBC'S BEST DEBUTS OF 2024 **<br><br><b>'Joyful, exuberant, and crackling with adventure.' STUART TURTON<br><br>'A truly magical book: exciting, intricately plotted and emotionally compelling.' <i>THE GUARDIAN</i><br><br>'A clever and beautiful novel about the power of books.' SUNYI DEAN</b><br><br><b>'Full of magic, wonder and heart.' ANITA FRANK</b><br><br><b>'A magical, mesmerising adventure from the very first page.' A. J. WEST</b><br><br><b>'A stunning fever dream of a story.' LEE CHILD</b><br><br><b>'A beautiful, unputdownable love letter to books.' BETH LEWIS</b><br><br><b>'A real page-turner - incredibly ambitious and inventive.' ROSIE ANDREWS </b><br><br><b>----------------------------------</b><br><br><b>Because some doors should never be opened.</b><br><br>New York bookseller Cassie Andrews is not sure what she's doing with her life. She lives quietly, sharing an apartment with her best friend, Izzy. Then a