This Book is Not Good for You is a book by anonymous author Pseudonymous Bosch. It is part of the "Secret Series", a pentalogy of books written by Bosch, and is the sequel to The Name of This Book is Secret and If You're Reading This, It's Too Late. In the story, a famous chef named Señor Hugo captures Cass's mother in order to get Cass to bring him the legendary Tuning Fork for the Midnight Sun (the society whose goal is to find the Secret and be able to live forever), in hope that it will help the members achieve immortality.