The Iron Vow Society · Books One–Four
The Iron Vow Society: The Complete Omnibus
The complete four-book Iron Vow Society story in one collected edition.
Complete seriesWhy-choose fantasy romanceThe Obsidian Marrow academy
Official book guide
What is The Iron Vow Society: The Complete Omnibus about?
The Iron Vow Society is K.S. Valentina’s complete four-book dark-academy fantasy romance series following Scarlett from the Sectors into the Obsidian Marrow, where founding families, living oaths, and dangerous men compete to decide who gets to shape the world beyond the academy.
Includes Study in Scarlett, Tithe of the Sovereign, Ashes of the Vow, and What the Nothing Holds.
Complete seriesMagic academyBlood oaths
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