As a confirmed scaredy-cat I was afraid to pick up this sci-fi/horror novel, but a couple of readers I trust told me I could probably handle it. They were right. Here's the deal: Mermaids are real, but they are not like Ariel. Some researchers believe this with their whole heart and have made studying these mermaids, or sirens, their life's work. Others are deeply skeptical, but regardless what camp they're in, a huge swath of the scientific community isabout to set sail on another voyage to the Mariana Trench, a follow-up to a voyage seven years earlier ended in tragedy with everyone on board lost at sea. No one is exactly sure why; skeptics called the whole thing a hoax. Both the siren skeptics and the true believers are about to discover mermaids are very real—and it will be a miracle if anyone gets out of there alive.