Aquapolis of Sins

Fifty people find themselves stuck in a man-made facility miles beneath the ocean surface, isolated from the rest of the world. With only pitch black water surrounding them, and no methods of contact with the surface, they're left to fend for themselves—against both each other and the unknown. To make matters worse, a haunting rumor spreads like wildfire: There are a select few who carry murderous intent within their hearts. Panic ensues, people scatter.

All the while these alarming circumstances develop, our detective protagonist, Renn, is met with a surprise reunion. After eight years, he finds himself face to face with his capable college partner, Sharon. To increase their chances of survival, they band together, facing their harrowing environment as one, combining his seasoned sleuth with her savvy reasoning.