The Terces Society (Secret spelled backwards) is a secret organization in The Secret Series, that fights to stop the Midnight Sun from learning of The Secret, which was rumored to contain the secret to immortality. It was founded by The Jester. It is revealed in the second book, "If You're Reading This, It's Too Late", that "Terces" is actually "secret" spelt backwards. The group used to be named "The Secret Society" until one day they decided to change it, after people would always want to know what their secret is. Cass and Max-Ernest join the society towards the end of the first novel, "The Name of This Book is Secret" after Pietro Bergamo draws them a coded letter in their windowsill, saying that they should join. The current leader of the society is Pietro Bergamo.
The Jester (founder)
- Pietro Bergamo (modern leader)
- William Wilton Wallace III