Some books stay with you long after you’ve turned the last page. The Book of Lost Hours by Hayley Gelfuso is absolutely one of those books. This historical fantasy review is hard to write without gushing, because the story is genuinely fascinating from start to finish — and it touched on things that feel deeply relevant right now.

A Story That Begins in the Darkest of Times

The story opens in 1938 Germany. Lisavet Levy is an eleven-year-old Jewish girl whose family are timekeepers. When the Nazis come for her family, her father hides her in a room and tells her to stay put. She obeys — and hours later, she finds herself in something called the time space. It’s an extraordinary, almost dreamlike place, and Lisavet is suddenly very much alone. She soon befriends a ghost she names Azrael, who helps her understand this strange new world she’s landed in.

What unfolds from there is a layered, multi-timeline story that moves between Germany, America, Russia, and other parts of the world. It goes back and forth in time to connect characters and fill in the gaps — and it works beautifully. I loved how all the pieces came together.

Memory, Power, and Who Gets to Write History

One of the most compelling threads in The Book of Lost Hours involves government agents who come into the time space to destroy the memories of people they want erased from history. The American agents are trying to prevent something like what happened under the Nazis — but their method is the same: burn the books, erase the people. As soon as they leave, Lisavet rushes to put out the fire. She believes every person’s memories deserve to be preserved.

That tension — between those who want to control history and those who want to protect it — is where the book really hit home for me. I couldn’t help thinking about what’s happening in our world today. People are destroying history, insisting certain things never happened, and rewriting narratives to suit their own purposes. Gelfuso wrote something that feels timely without ever feeling preachy.

Love, Loss, and the Sacrifices We Make

Lisavet grows up in the time space. She learns to time walk, exploring other people’s memories. And then she falls in love with Ernest Duquesne, an American government spy. They spend a year and a half together before it becomes too dangerous. In an act of devastating selflessness, Lisavet erases herself from his memory to protect his life — even as he’s begging her to leave the time space and build a life with him in hiding.

Then she discovers she’s pregnant.

That revelation changes everything. Suddenly, Lisavet is willing to sacrifice whatever it takes to protect her child. It’s heartbreaking and fierce and so well done.

An Idea That Cannot Be Erased

There’s a line in The Book of Lost Hours about Lisavet being an idea that couldn’t be erased. That line stopped me in my tracks. It immediately reminded me of another book I reviewed recently — The Invisible Life of Addie LaRue by V.E. Schwab — in which the main character is forgotten by everyone she meets, but realizes that the ideas she plants in the world can’t be forgotten. The parallel between these two characters feels almost intentional, and it made both books resonate even more deeply.

My Final Thoughts on The Book of Lost Hours

The Book of Lost Hours is the kind of historical fantasy that makes you think as much as it makes you feel. The characters are richly connected, the time-bending structure keeps you engaged, and the themes land with real weight. If you love stories that weave history with magic, wrestle with big questions about memory and power, and deliver genuine emotional punch — this one absolutely belongs on your reading list.