Description:

Beautiful. Fearless. Dangerous. The kind of girls you envy. The kind of girls you hate. Strangers in town for the summer, Penn, Thea and Lexi have caught everyone's attention, including the eye of practical Harper.But it's her sister Gemma, they've chosen. Sixteen-year-old Gemma seems to have it all - carefree, pretty, and falling in live with the boy next door. But her greatest passion is the water. She craves solitary night-light swims under the stars, where she can belong to the sea. But lately she's had company. Penn, Thea and Lexi spend their nights dancing and partying on the cove, and one night Gemma joins them. she wakes, groggy, on the beach the next morning and knows something has changed. Suddenly Gemma is stronger, faster and more beautiful then ever. And as she discovers her new mystical powers, Gemma is forced to choose between staying with those she loves - or entering a dark world brimming with unimaginable secrets.