This book is not easy to get into, to attempt to 'read', but a steer is given in the text; that the back images establish the context for the hidden images. However, in most cases there is no connection between the two, which is the actual message implied by the book - that we seek connections and meanings where there just aren't any. It's about the 'lies' of photography, about photographs never showing the 'truth.'
It also has a psychological element; should readers resist the temptation to cut open these hidden pages and for how long? It's a book as much about the tactical experience of handling as about the content."