Six strangers awaken in an isolated underground bunker with no memory of how they arrived or how long they have been there. Their only guidance comes from recorded instructions that claim they have been chosen to restart the human race. The world outside, they are told, has fallen. The bunker is their refuge. Their mission is survival.
But as the group uncovers fragments of their pasts and clues about the facility, they begin to suspect that the experiment is not what it seems. The truth beyond the sealed doors may be more dangerous than anything they imagine, and the secret at the heart of the trials forces them to question who they can trust.
With 4.2 stars on Amazon, strong Goodreads reception, and recognition as an Editors Pick for Best Science Fiction and Fantasy, this standalone thriller showcases A. G. Riddle at his most suspenseful.
