Piercing the Darkness (Darkness #2) by Frank E. Peretti

It all begins in Bacon's Corner, a tiny farming community far from the interstate. . . . An attempted murder, a case of mistaken--or covered up?--identity, and a ruthless lawsuit against a struggling school. Sally Beth Roe, a young loner, finds herself caught in the middle of these bizarre events, fleeing for her life while trying to recall her dark past.

Heart-stopping action, a penetrating glimpse into our times, and a vivid portrayal of the power of redemption 

Piercing the Darkness