At 9:32 on a tropical morning, a puddle jumper takes off into the skies over Tortola. But at 9:39, not far from Detective Hannah Sampson's boat, it nose-dives into the water. Only moments later, Hannah and her partner are sixty feet below the surface, vying with reef sharks for any survivors. Soon Hannah plunges into an investigation. Was one of the passengers a target? And who would want to kill a planeload of Caribbean tourists? Every lead is a dead end. And as Hannah copes with a nine-year-old survivor, a shady suspect, a shaky relationship -- and an approaching hurricane -- she wonders if she's gotten in too deep. . . .