Gin Sullivan is living in Chicago and working as a medical examiner when she is informed that a body has been found in the woods outside her small hometown. It could be her sister, who went missing almost 20 years ago. To find an answer to the question of what happened to her sister that fateful summer, Gin makes the difficult decision to use her talents as a medical examiner to help the police investigation. But as Gin gets deeper into the case, she uncovers a shocking truth that could change everything --- if it doesn’t destroy what’s left of her and her family first.