There are 2 books in the Hierarchy series. The newest book is The Strength of the Few which came out in 2025.

1
The Will of the Many

Book cover of The Will of the Many
At the elite Catenan Academy, where students are prepared as the future leaders of the Hierarchy empire, the curriculum reveals a layered set of mysteries which turn murderous in this new fantasy by bestselling author of The Licanius Trilogy, James Islington.

Vis, the adopted son of Magnus Quintus Ulcisor, a…
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2
The Strength of the Few

Book cover of The Strength of the Few
INSTANT #1 New York Times bestseller!

This USA TODAY and international bestseller features a reversible book cover that matches the original hardcover art design, and beautifully designed endpapers.

This highly anticipated sequel to The Will of the Many—one of 2023's most lauded and bestselling fantasy novels—follows Vis as he grapples…