Gerda Persson has lain dead for three days. Her life seems to have been quite ordinary. Until the freezer in her home is opened. It is full of books, neatly stacked and wrapped in clingfilm, a thick layer of ice covering them - all by the same prize-winning author, all with handwritten dedications to Gerda.

What story do these books have to tell? And what is their connection to a young boy found abandoned in an amusement park? Shadow is an utterly compelling novel of dark family secrets, murder and betrayal, which will keep you gripped until its final thrilling...