The EITC Book Of Secrets was a big book with all the EITC secrets in it. Some secrets were :
- All the EITC Leaders
- All EITC commanders
- Every person in the EITC
- Secrets about all the EITC leaders
- A list of dead EITC
Keira Kinover was sent to get the book in The Adventures of Zeke and Keira 2 : Keira's Mission. It was mentioned and the end of The Adventures of Zeke and Keira 1 : In The Hands Of The EITC. Nobody has currently found out who wrote it.