|Episode(s)||6.21 Let It Bleed|
As part of his attempts to locate Purgatory, Castiel steals Moishe's journal from Bobby's place. When Bobby realizes that his copy of Moishe's journal is missing, he tells Sam and Dean that he thinks Castiel stole the journal so that he could read Moishe's notes about H.P. Lovecraft, an author who was fascinated with the concept of doors to other dimensions. Luckily, Bobby had photocopied the journal.