John Winchester leaves Kansas and takes his boys, Sam and Dean, to Arizona to look for a man named Fletcher Gable. The man gives him the journal which is a familiar object to those who watch the Supernatural TV series. Fletcher explains some things to John about creatures that he is looking for and then directs him to a cemetery in Eureka, California where he says the Black Shuck (Hellhound) was last seen. The Shuck may be what killed Mary.