Who are the biggest nerds in the World of Darkness? The Technocracy? The Order of Hermes? None of them hold a candle to the Arcanum.
Normally, I'm not a huge fan of the 1st person style for game books: though ambiguity leaves room for creativity, often clarity is what's needed. Here, though, it worked quite well. The story is told through the notes and letter, primarily of a new member joining the Arcanum and learning about it, but also from the founders of the society. The section on the Arcanum's secrets is told from the point of view of a Hermetic mage who has been investigating them. Fitting for such an organization, it leaves everyone in the dark.
Generally well-written (though there are a few cringe moments, like when it describes people with the G-slur, as WoD often did back in the day) the book is a useful companion to Ascension's Right Hand, showing what happens to occultists who don't end up attached to a Tradition but still have a burning need to know.
[4 of 5 Stars!]