How did traces of the chemical phelsine get into the water in Tappy East Creek? Phelsine is only present in human blood. It can't exist by itself in water.

Does the presence of this chemical somehow explain why the creek turned oily and black? Is this the same phenomenon that is said to have occurred after Eileen Treacle drowned nearly two hundred years ago?

News account of the camping trip. (Sorry the article is a little soiled and tattered—this is the copy Cecilia gave me. She'd been carrying it around with her everywhere, so it's gotten beaten up.) Cecilia told me she didn't contradict this story publicly—even though her own version of the events is very different. If Cecilia's version is the correct one, what caused Mark's strange shift in personality? Did he simply snap? Or was the evil of the Blair Witch involved?

Letter from the P.I. (a family friend) who helped me find Lukas Graham. The letter speaks for itself—but raises a few questions. Do Lukas's parents simply believe he's a troubled teen? If so, then why are they trying to hide him by switching his location so often?

The text of this e-mail is compelling, and it seems to back up Cecilia's claims. But is Lukas unstable and delusional? Or did the ghost of Eileen Treacle choose him for some reason and confide in him?