The Synthesis and the Animus (The Phantom of the Earth Book 3)

THE SYNTHESIS AND THE ANIMUSTHE PHANTOM OF THE EARTH: BOOK THREE
 
In the Great Commonwealth of Beimeni, a subterranean civilization in North America, expansion long ago gave way to peace and prosperity in the face of the history's most devastating plague. Immortality is the reward for service and loyalty in Beimeni, a place where the physical blends with the metaphysical and power consolidates in the hands of those with a genetic edge. The fissures first spread slowly, then swiftly, until now the Great Commonwealth finds itself on the brink of economic devastation, challenged by forces from within that know its secrets and its crimes. At the center of the conflict lie the Selendias of Piscator, founders of the resistance with an uncanny connection to the zeropoint field, and the Barão Strike Team, three researchers tasked with finding a cure to the Reassortment Strain, the plague that nearly wiped transhumankind from the Earth. Traveling from the uninhabitable but pristine surface to the habitable but inhospitable underground, this is a story about dedication to dreams, battle for survival, discovery and connection, song and celebration, undoing past misdeeds, and sacrifice for the greater good.
In The Synthesis and the Animus, former RDD scientist Antosha Zereoue has returned to Beimeni from the Lower Level, while Captain Broden Barão is challenged by the Liberation Front. As the commonwealth prepares to honor two hundred years of Chancellor Atticus Masimovian's rule, disparate sides will reconcile differences and form an accord with consequences that shake the underground. 
MORE ABOUT THE PHANTOM OF THE EARTH
The Phantom of the Earth is a thought-provoking post-apocalyptic science fiction series. It relies heavily upon synthetic biology and quantum physics.