Unsettled weather has caused life-threatening rip currents to sprout up seemingly at random in the usually tranquil sea around Grand Cayman. Despite posted warnings to stay out of the surf, several women lose their life when caught in the turbulent waters. Fin attempts some dangerous rescues, and nearly loses her own life in the process.

Meanwhile, Fin and the team at RIO are struggling to find more sources of funding for the Institute’s important research, and danger arises from an unexpected source while Fin and hot movie star Rafe Cummings are filming an upcoming documentary.

Soon after a young internet influencer goes missing and is feared drowned, Fin realizes that someone lured all the dead women into the dangerous rip currents. But who, and why?