Sam Maddox, a troubled girl whose father committed suicide, has earned a reputation at her high school for being a bit promiscuous. When Sam begins seeing brilliant, MIT-bound Henry Sinclair, the two opposites really attract. Although Sam doesn’t realize it, Henry is in the grip of an insane romantic obsession, and he will kill anyone who tries to put an end to his star-crossed – and increasingly deadly – romance.
An idyllic small town is rocked when Aubrey Fleming (Lindsay Lohan), a bright and promising young woman, is abducted and tortured by a sadistic serial killer. When she manages to escape, the traumatized girl who regains consciousness in the hospital insists that she is not who they think she is and that the real Aubrey Fleming is still in mortal danger.