FBI Special Agent Clare Marshall was separated from her sister Beth in childhood when their mother tried to kill them. Now Clare learns that Beth lives in the small town of Farley, South Carolina, but when she goes there to reunite with Beth, Clare discovers her sister is missing and that someone in the town is responsible for her disappearance.

Clare receives an offer to help with the search from fellow FBI Special Agent Jake Sutton. The offer is too good to refuse, though that is exactly what Clare wants to do. Jake is Clare's former lover, a man she cannot forget, and who has an agenda of his own.

Now while Clare tracks her sister, someone is tracking Clare, and finding her sister may cost Clare her life.