In a post-apocalyptic flooded New York City, a private investigator's routine surveillance case leads to a treasure everyone wants to find--and someone is willing to kill for. Depth combines hardboiled mystery and dystopian science fiction in a future where the rising ocean levels have left New York twenty-one stories under water and cut off from the rest of the United States. But the city survives, and Simone Pierce is one of its best private investigators...