Nathaniel is an inmate locked away in a godforsaken prison submerged a mile beneath the ocean's surface without any idea of the day, week, or year. He has been abused, tortured, and left to rot with one of the cruelest prison directors he has ever met. But a man can only take so much before he decides he is done. He is certain he is no criminal, but he doesn't want to be a hero either. Nate wants freedom, and he is determined to get it one way or another. Alongside Raven, Grayson, Atlas, and others, Nate decides to escape The Gr�f. After he discerns that even the most secure prison has weaknesses, he begins formulating a strategy that will only be successful if the timing is perfect. But when he finally unfurls his plan, Nate discovers that freedom comes at a high cost. In this exciting thriller, an inmate locked in an underwater prison formulates an escape plan that leads him and others on a dangerous journey from hell into the unknown.