I Know Who Killed Me (2007) - Synopsis

Lohan plays Aubrey, the young daughter of affluent parents who is abducted and mutilated by a sadistic serial killer. She manages to escape, but the girl who regains consciousness in the hospital claims to be not Aubrey but Dakota - identical to Aubrey, but with a much different demeanor. Dakota struggles to convince anyone that she is not Aubrey and finds herself in a desperate race to save Aubrey's life and her own against overwhelming odds.