The secrets of the Angelics and Demonics. The ways in which the Arcanoi of the dead affect vampires and their ilk. Records of potent and mysterious Artifacts. All sorts of good stuff like that.
A very nice menagerie of content for storytelling Wraith, including ideas for Harrowings, new artifacts, a great Q&A section, info on creatures of the Shadowlands. I think that it’s good but few; it could have included a lot more and be a complete Storyteller’s Guide.