Sisters Marnie and Diana both harbor secrets about the night their mother drowned. After ten years of silence between them, Marnie is called back to the South Carolina Lowcountry by Diana's ex-husband, Quinn. Diana is on the verge of going under, and her young son is refusing to speak. To help the traumatized boy, Marnie must reopen old wounds and bring her darkest memories back to the surface.

At thirty-two Jillian Parrish finally finds the courage to take charge of her life and discover what really lives in the dark spaces under her bed. Pregnany and recently divorced, she takes her seven-year-old daughter to seek refuge and solace on Pawleys Island, South Carolina--Jillian's only source of happy childhood memories. Summers spent at her grandmother's beach house were Jillian's sanctuary from indifferent parents until her best friend, Lauren...