The Book of Lost Hours
by Hayley Gelfuso
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Pub Date 6 Nov 2025 | Archive Date 16 Nov 2025
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Description
Escape through time.
Save their stories.
Make people remember.
Nuremberg, 1938. Lisavet Levy's watchmaker father saves her from the Nazis by pushing her through a mysterious doorway. There, she discovers the Time Space - a vast, magical library where the memories of everyone who has ever lived are stored in books. Her father promises to follow, but he never comes.
Trapped in the library, she encounters timekeepers, who decide whose memories survive and whose are destroyed.
Lisavet tries to save as many memories as she can, but when she falls in love with a timekeeper, the whole course of history could be at stake...
Readers are loving The Book of Lost Hours!
'‘What a FANTASTIC book! Interdimensional libraries, Cold War espionage, and time travel? Yes, please!'
‘Finishing the book left a hole in my heart’
‘I want to rate this book infinity stars’
'Clever, beautiful, genre-bending'
'A fabulous debut'
Advance Praise
'A love story that defies the boundaries of time, memory and reality' Patti Callahan Henry
'The Book of Lost Hours performs actual magic' Daria Lavelle
'An astounding debut' Jamie Ford
'Gelfuso seamlessly blends elements of romance and fantasy into the twisty quest narrative, and packs excitement into every page. It's a delight' Publishers Weekly
'Book clubs, fans of Kaliane Bradley's The Ministry of Time, and readers who enjoy books about magical libraries will find much to enjoy and discuss in this intriguing novel' Booklist
Available Editions
| EDITION | Hardcover |
| ISBN | 9781805464754 |
| PRICE | £16.99 (GBP) |
| PAGES | 400 |
Links
Available on NetGalley
Average rating from 29 members
Featured Reviews
Mary H, Reviewer
A mix of history and fantasy which I really loved.
Fantastic characters, especially Lisavet, and a wonderful Story.
This novel is highly recommended and I would give it more stars than five if I could.
Emma T, Reviewer
I found the whole story truly engaging. A brilliant blend of history and fantasy. I thought it was a unique concept with the 'time space' and the magic system within it. The duel timelines and eventual conclusion all blended together seamlessly. I loved the romance storyline but also felt it was perfectly done in that it was not the main storyline through the whole book.
In all, I thought it was beautifully well written, engaging and fabulously unique.
Thank you to Netgalley for my ARC
Reviewer 1415484
WOW! What is there to even say about this book? I feel like I've been floating in time space for the last week with this incredible book by my side and now I'm out the other side just trying to ground myself again! 😅
This is truly such an incredible book. The time space, the time travel and the world building was perfection. I was instantly hooked and transported into this world where people use magical watches to enter the time space... only to find inside that other timekeepers are burning memories.
I loved Lisavet and Earnest was a dream.
This whole book was like a dream. I feel like I'm waking up from the most intense and wonderful and strange dream...
I am struggling to write this review because honestly I don't think I'm truly back from the time space and may need three months to sit in a room and just... what's the word? Process it all.
Magical realism at it's finest. If you love books like The Invisible Life of Addie LaRue and that kind of magical fantasy that makes you question everything in all the best ways, you definitely need to read this book!
Thank you to the author, publisher and NetGalley for the ARC in exchange for an honest review.
Reviewer 1491639
this book was incredible. it took all the way in to the insides of it until i felt i was walking amongst it. the story totally swallowed me whole. what hit me very early on was how sad and unease a realisation i had. because this of course isn't real. but look deeper, look just a tad closer and it feels all to real. all too similar. all too real. because we ARE seeing this.
i didn't catch breathes in moments. and sometimes i had to stop so i could re-read a particularly grasping moment. and then there were times later in the day id be thinking on it. and soon there was no way a day could leave the ticking clock without me finishing this book! and im so glad i did. what a book.
it brings us the story of Livavet who is taken on a journey which starts when he father tries to save her by putting her into a odd space-time library. hes done so to get her away from the Nazi's. but this library isn't books fulls of stories. no, this library is memories of people who have been lost over time. its their memories. but what she then discovers is a darker walker goes through this place, they pick and choose what to erase in order to change what people see or believe to be true. they are re writing history. yup yup that is where i did my gulp. people changing or simply erasing truth to give power or pain. yikes. following Livavets through all this felt so powerful. i felt so protective of her too.
there was also the other timeline we follow which is one set later and its about Amelia who is finding thing extremely difficult having to face the grief of losing her Uncles. then she gets approached by a mysterious agent from the CIA who is looking for a book of memories her Uncle is linked to. i dont want to say too much about this because the clue and ties are all there to make this perfect arc but they will delight you when you come across them fresh.
this book held so much weight and held my attention all the way through.
all of the voices have their own place in this book and they feel completely there own. so when you switch to one or the other you know exactly where you are at and who you are reading about.
and there is that special part that dual timelines done well have. when it all comes together and your heart and eyes go wide. and there is this sudden knowing. where everything fits together. and we had all that in this book and then some. the end didn't drip, it didn't peter out. it grabbed you with just as much emotion as the rest of the book did but then gave you the ending you needed to make you sit back and do that big readers satisfied sigh.
Michal G, Bookseller
In a desperate attempt to save her from the horrors of Kristallnacht, Lisavet Levy's watchmaker father sends her into another dimension (the time space). Trapped there without knowledge of the horrors unfolding in her home country, she discovers the world of timewalking and memory-erasure espionage. As the grandchild of a German Holocaust survivor, I am always somewhat sensitive to the way certain historical fiction writers exploit stories of this time in a way that can feel slightly exploitative to someone of my background. Somehow, Gelfuso managed to take this slightly bonkers premise and pull it off in a poignant, meaningful and emotive story about love, memory and the dangers of totalitarianism.
Jemima P, Reviewer
It has a library stuck in time (Midnight Library); it has ministry and government interference with time (Ministry of Time), and it has World War 2 and books (the Book Thief). And it’s not like any of them.
We follow two young people who are destined to become timekeepers, but who have very different backgrounds and reasons for being involved. It’s a game of espionage and intrigue, and finding oneself amid the dark corridors of timespace. And it’s very hard to put down.
It’s a different type of time travel related story, with more in common with J K Rowling’s storage of memories for the pensieve than anything else I can think of, yet throws in a some theoretical aspects of time as a real place (somewhat like the film Interstellar) . This makes it original, and well worth anyone exploring, even if they don’t actually time travel in the usual sense. Think more of how crossing historical boundaries would be if you could actually see Einstein’s thoughts as he developed relativity.
Beautifully written, pacey, with vivid characters, this one is well worth a read – or as a gift to your favourite person who enjoys mystery, history or immersion in questions of ‘what if?’ and their consequences. Definitely a 5 star read.
An oringal, well written story, and I thought it was incredible. It's primarily a book about time travel and memories with romance, history, multiple timelines and spy elements thrown in.
Lisavet's story is fascinating, she first enters the time space as her father tries to protect her from Nazi's and then becomes trapped there. She then starts to try and protect memories other people are trying to destroy and we're introduced to lots more interesting characters. I loved the character development and that people are changed by the events that take place. The story was unpredictable and I was gripped throughout. I was worried that the ending wouldn't live up to the rest of the book but actually I thought it was perfect.
This would suit fans of The Book Of Doors and anyone who enjoys time travel.
An interesting and unusual book that makes the reader think about the path lives take and how we use our time. Timekeepers have found a way to a huge library of memories, and ways to move through time. A young girl is thrust into the library by her watchmaker father to escape the Nazis on Krystallnacht, and as she doesn't carry a timepiece, she cannot get out. So she becomes untethered from time, and wanders the halls, befriended by a ghostly figure of the past. However, timekeepers come into the library to destroy memories, to erase those they deem 'unsuitable'.
The story is told well, really engages the reader's feelings and draws you into this strange alternate reality. I thoroughly enjoyed it, although I found the ending a little rushed.
Thank you to NetGalley and Atlantic Books for allowing me access to the ARC in exchange for an honest review.
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