This Book is a great book. I like how many twists there are throughout and also the development of the characters themselves. I think its cool how the audience/reader is basically invited into the main characters mind and sees the growth. Although, sometimes this book became to predictable, for example, who was in the fifth room from the start it was quite obvious, from the subtle hints to going back to who was behind the curtain, to the end when the main character 'miri' hears the voice.
Other than that I recommend this book!!