Ancient Guardians The Legacy of the Key (Ancient Guardians Series: Book 1) by S.L. Morgan
Approx. 101,130 words.
Published on October 16, 2013.
It’s about the Guardians, who are from another dimension, Pemdas; who are sworn to protect the people of Earth from threats from other worlds. The Guardians are forced to reveal their secret presence on Earth when Reece Bryant’s life becomes threatened. Unbeknownst to her, she is the link between Earth and all other worlds existing.