"The Name of This Book Is Secret"

Bosch, Pseudonymous (2007). The Name of This Book is Secret. Grades 4-6.

The author of this book does not want to share too much information with you, including the names of the characters, where they live, or what they look like. Instead, he provides fictional names and let's you the reader use your imagination in realizing the setting and character traits.
If you can get past the first few pages where the author goes on and on explaining just why he is doing this, you will find that this book is a quirky mix of adventure and mystery.
Cassandra and Max-Ernest, the two main characters, are both outsiders at their school. When Cassandra's grandfathers are given a mysterious box that was found at a recently deceased magician's home, Cassandra notices something strange about it. This is where the adventure begins. Cassandra and Max-Ernest pair up to figure out the secret that the magician does not want anyone to know. They have to keep this box and any other contents they find away from the villains, Mr. L and Mrs. Mauvais, who may somehow be connected to the magician's death.
And if you enjoy this book, don't forget to read the sequel: If You're Reading This, It's Too Late.