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Content snapshot
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Violence
Some
Thriller violence and murder
Language
Barely any
Mild language
Sexual Content
Barely any
Brief romantic content
Substance Use
None
No substance use
Emotional Intensity
Some
Government surveillance and the ethics of national security vs
What this book is about
When the NSA's top-secret code-breaking supercomputer encounters a supposedly unbreakable algorithm, cryptographer Susan Fletcher is called in to investigate. Meanwhile, her fiancé is sent to Spain to retrieve the algorithm's creator—with deadly results. Dan Brown's pre-Da Vinci Code techno-thriller has his signature blend of codes, conspiracies, and rapid chapter pacing, though the technical content has aged poorly.
Notes for sensitive readers
Reader-flagged moments and themes that may affect your experience.
Thriller violence and murder
Government surveillance themes
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