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Cover of The Book of Lost Hours

The Book of Lost Hours

Hayley Gelfuso (2025-08-26)

Subgenre
Age groupAdult 18+
Content ratingPG-13
Pages400 (Standard (250-400))
SeriesA GMA Book #
Setting
CSM age16

Content levels

ViolenceModerate
Sexual contentModerate
LanguageMild

Hero archetypes

Spy / Operative

Protagonist archetypes

Time-DisplacedOutcast / Loner

Synopsis

"A spectacular historical and speculative novel about a WWII-era girl who grows up trapped in the "time space," a cavernous library featuring books that house memories--but while government agents burn memories they wish to erase, she saves them, until an affair with an American CIA agent as a young woman changes the course of her life"--

Tags

Historical FantasySpeculative FictionLiterary FictionWorld War IICold War Era

Is The Book of Lost Hours appropriate for my child?

Suitable for most readers 16 and up.

Features a WWII-era setting with government censorship, memory manipulation, and burned memories as a form of control. Contains a romantic relationship with espionage elements and implied intimacy.

What to know going in

This book has moderate violence, moderate sexual content, and mild language. Content notes include captivity, war, and political violence (see the full list above).

Who'll love this

Teens interested in unique historical fantasy will be captivated by a girl trapped in a magical library who saves memories the government wants destroyed.