Sia practically grew up in the water scuba diving, and wreck dives are run of the mill. But this time … the dive goes terribly wrong.
Attacked by a mysterious creature, Sia’s boat is sunk, her customers are killed, and she washes up on a deserted island with no sign of rescue in sight.
Sia’s best hope for finding answers may rest in the center of the island, at the bottom of a flooded sinkhole that only she has the skills to navigate. But even if the creature lurking in the depths doesn’t swallow her and the other survivors, the secrets of their fractured reality on the island might.