4 Books Found

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Based on your description:

"Something to do with a library, had glass in the title? Kinda fantasy, hero vs evil I think"

July 17, 2026

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Likely answer

Fantasy Books About Heroic Battles Against Evil Librarians

The book you are looking for is Alcatraz versus the Shattered Lens by Brandon Sanderson. As the fourth installment in the Alcatraz series, it continues the humorous fantasy adventure of Alcatraz Smedry as he fights the world-dominating Evil Librarians. The title references the Shattered Lens, and the series is well-known for its central conflict involving library-based villains.

Confirmed match: Alcatraz versus the Shattered Lens by Brandon Sanderson