El caso del doctor vampiro y la escuela monstruosa

Dear incorrigible creatures: I ask you, I implore you not to read this book for anything in the world. What it contains is probably the most amazing and creepy thing you will ever read. If you buy this book, throw it away. Feed it to the beasts of the forest. Crush him with the bike. Throw him in the toilet. Throw him with a slingshot. Jump on it... Do what you want, but don't read on! Are you still here? NO!