HomeThrillerThe Invisible Library

Cover of The Invisible Library

Thriller · 2014 · PG-13

The Invisible Library

by Genevieve Cogman

The Library exists between worlds. Irene is a Librarian. Her assignment is a dangerous book in an alternate London.

For14+GenreThrillerLength336 pagesRead time~9.3 hours

This analysis was generated by AI from publicly available reader reviews, literary criticism, and book discussions. It has not been verified by a BookLens community reviewer and may contain errors. Be the first to verify →

Content snapshot

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What's in this book, at a glance — five things readers want to know before they start.

Violence

A lot

Significant violence — Library spy operations; the alternate London's dangers

Language

Barely any

Minimal strong language

Sexual Content

Barely any

No significant romantic content in this volume

Substance Use

None

No substance use

Emotional Intensity

Some

Significant violence — the mission involves real danger; Kai's nature — he is not what he appears; The chaos/order balance — the world's political structure; A mystery within the alternate London

What this book is about

Irene is a Librarian — a spy and collector for the Library, a building that exists between all alternate worlds and collects unique books from each. Her next assignment takes her to an alternate Victorian London rife with fae, chaos, and a very dangerous dragon. The Invisible Library is the first of a series — light adventure, magic, and a world-hopping premise.

Notes for sensitive readers

Reader-flagged moments and themes that may affect your experience.

Significant violence — the mission involves real danger

Kai's nature — revealed as the novel progresses

The fae and chaos — the alternate London's political tensions

A long series — 9+ books; this volume is substantial setup

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