Synopsis: "When a passenger plane disappears over the Indian Ocean in autumn 2013, a massive search gets underway. A deep trolling, unmanned pod picks up faint readings and soon the deep sea submersible Oceana and her three crew members are four miles below the ocean surface in search of the black box from flight N340. Nothing could have prepared the submersible crew for what they discover and what happens afterwards. Ancient evils and other world creatures challenge the survival of the Oceana's crew. Mysteries of the past are revealed, but death hangs in the balance for Sophie, Troy and Eliot." — quoted from this book's product page on Amazon as of 2018-06-21.