
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.
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 its fictional architecture, built on real acoustic research into medieval sacred spaces.
Where can I buy The Grimoire?
Available as an ebook in Masters X: The Complete Novel (Kindle, $12.99). The individual volumes are print-only. Hardcover and paperback editions are sold direct from the publisher via IngramSpark when orderable; see the edition links on this page.
