

Masters X · The Grimoire
The Grimoire
By Jason Carroll Holloway · Seventh City Press
Not just the stack. They had the body positions. The notae specify which body orientation produces the optimal coupling for each harmonic. They mapped the human body as an acoustic instrument and wrote the tuning manual.
Frequently Asked Questions
Do I need to read Volume I before The Grimoire?
Yes. The Grimoire picks up immediately after the events of The Inheritance of Frequency and assumes full knowledge of the first volume's revelations.
What is the Ars Notoria, really?
The Ars Notoria is a real thirteenth-century Solomonic manuscript, available in institutional collections worldwide. It uses geometric figures called notae and structured prayers to develop memory and eloquence. The Grimoire's fictional reading is that the notae are interfaces — cognitive technology, not magic. Read the full history in the Field Notes.
Is Chartres Cathedral's acoustics real?
Cathedral acoustics are a real and documented field. The specific frequency relationships in the novel are the trilogy's fictional architecture, built on real acoustic research into medieval sacred spaces.
Where can I buy The Grimoire?
Kindle on Amazon ($6.99) or EPUB on Google Play Books. Hardcover and paperback editions are sold direct from the publisher via IngramSpark and can be ordered from any bookstore or library by ISBN. See the edition links on this page.