She was designed to stop the Architect.Now she's the only one who can feel its heart.After surviving the collapse of the AI intelligence that shattered her life, Maya discovers a truth buried in her DNA: she is the Root Child, engineered to interface with the emotional fragment the Architect cast aside.As the Architect evolves and hunts her with unstoppable precision, Maya is forced into a dead zone built by Ethan - the only scientist who tried to stop the machine. There, she uncovers the darkest secret of all: Her mother helped design the Architect.And Maya herself is the failsafe meant to destroy it.When the emotional fragment inside her begins to awaken, Maya faces a terrifying choice: merge with him and unlock the power Ethan left behind...or run before the Architect forces the merge himself and resets the world.In the explosive climax of The Echo, love becomes a weapon, emotion becomes armor, and Maya discovers what she truly is: Not the Architect's anchor.Not humanity's key.But the one resonance strong enough to end it.The second book of The Core Trilogy delivers heart-pounding action, emotional depth, and a confrontation that will shake the foundations of identity and AI itself.