My 9 year old found this book in her classroom library. Later that evening she informed me that I MUST read this book and read it now (she finished it in one afternoon, a true sign of a good book). I can see why she and others devoured the pages -- this is an exciting tale wrought with danger, suspense and a mystery that is a little bit creepy. Cass and Max are a great team, albeit hesitant to work together. The narrator is reminiscent of Lemony Snicket, guiding the reader through tense moments, assisting with challenging vocabulary, and encouraging the reader to look away or simply stop reading to save themselves the agony of what might follow.