The Secret

The secret of immortality is the main reason of this series. The Midnight Sun has attempted numerous times to find it. The "secret-keeper" is the only known person who knows it besides the Jester and Lord Pharoah. For the first half of book 4, Cass was on a mission to find the secret from the jester as she was the "secret-keeper". She failed but at the near end she recieved a note from the jester giving a clue of the secret as it read AS ABOVE SO BELOW, something the seer had told her some times. At the very end of the book, Cass recieved another note from the Jester but it was rapidly turning to dust.