The beautiful young woman is perfectly still, curled up in the trunk of the car, her long dark hair hiding her face. Her cotton blouse has ridden up a little, revealing two small dots an inch apart on her back. Just like the others.

Guilt has kept FBI Agent Tori Hunter away from her home in Manchester Bay, Minnesota for twenty years, ever since her twin sister disappeared on the Fourth of July, when the girls should have been together. But when she receives an anonymous newspaper clipping about another missing girl, Genevieve, Tori is dragged back to the past. Just like Tori’s sister, Genevieve vanished without a trace, her empty car abandoned on a lonely lakeside road as Independence Day fireworks lit up the sky overhead.

Returning to Minnesota lake country, Tori finds Genevieve’s distraught parents desperate for answers. How could their beautiful, popular daughter be snatched so near her own home? Under pressure to make an arrest, the police have no time for Tori’s theories. Besides, they already have a suspect for Genevieve’s abductor: a local man seen flirting with her the night she disappeared.

But then the suspect is found dead in his isolated cabin, days before another girl’s body is discovered bound and strangled in the trunk of her car, two strange dots on her back. The bloodstains surrounding her body belong to the one man Tori thought she could trust. Reeling, Tori knows the closer she gets to the truth, the more her own life is at risk. But can she catch this killer before it’s too late for Genevieve?