I Know Who Killed Me ending / spoiler
Dakota Moss is really the twin sister of Aubrey Fleming. There is a psychic link between the two, which inspired the character in Aubrey's story, and caused Dakota to manifest the injuries that Aubrey was sustaining. It turns out that Aubrey's music teacher is the killer, and her foster father sacrifices his life to kill him. Dakota then goes to dig up the body of her sister, and discovers that she is still barely alive.
