This book is not like Harry Potter. So, if you expect something similar you should skip it... or maybe not. It's philosophical book which is compared by critics with Metamorphosis by Franz Kafka (which, by the way, it's nice and interesting book). This book is about disappointment in life, drugs addicts, possibility to become really invisible. What will you do if no one can see you? If you remain like you are or be better or be worse, maybe even kill people. If you are invisible you will start feel invincible like the god. But is it really good? What it is this magical hat?