The Diamond Bearers' Destiny is book four of The Unaltered.
Calli learns about Chris's motives and tries to understand his dilemmas. Given no choice, the two of them travel with a mysterious companion back to General Harding's facility. They make an effort to dismantle the programs that are exterminating people with powers and wiping Diamond Bearers from the face of the Earth.
General Harding figures out what lies at the heart of agent Alpha's research project. Harding is determined to complete the studies and become an all-powerful Diamond Bearer - once Chris deceives Calli and delivers her to him, so he can destroy her and take the diamond from her heart.
What General Harding fails to understand is this: Calli's diamond will not make him the most powerful individual on the face of the Earth. Most powerful of all are the agents of nature who work for Crimson - the creator of the Sanguine Diamond. Upsetting the balance of nature is the last thing General Harding should do.
Follow Calli, Chris, Brand, and Crimson as they battle Deus Ex, undead Healers, and the notorious General Harding, in an effort to balance nature and save lives.