The ocean was an unforgiving force that took as it pleased and gave little back. Astrid knew that to be a fact. After the tragedy of her mother's death, she watched her father's sanity collapse as he was driven to prove that it was more than just a boating accident. Unlike him, she stayed well away from the water's edge and out of its grasp, immersed in the sorrow of her loss. But what little the ocean did give back, a man of myth with the tail of a fish, could reveal more about the secrets to a harrowing conspiracy brewing below the surface.

For months Summer is trapped in a cellar with the man who took her - and three other girls: Rose, Poppy, and Violet. His perfect, pure flowers. His family. But flowers can't survive long cut off from the sun, and time is running out...