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Mr. Mendlebee's Pandimensional Literary Repository [and Yarn]

Not yet published
Expected 17 Nov 26
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The Midnight Library meets The Ten Thousand Doors of January in this mesmerizing debut about a magical bookstore’s staff who must risk everything to stop the unraveling of the universe.

Stick your nose in these books and they just might bite.

Living at the center of the universe, Mr. Mendlebee’s Pandimensional Literary Repository (and Yarn) is home to lost things, forgotten objects, and dark and dangerous items best left unseen. With help from the Yeti-like Book Keeper, wizened Yarn Weaver, fish-out-of-water clerk, and Muriel the cat, the seaside store keeps the universe spinning as it should while opening its doors only to those who need it most, with one caveat: once you’ve visited, you may never return.

But when Violet, repository resident and personal friend to Mr. Mendlebee, starts seeing ghosts, the store allows its first repeat customer: Rachel, a young woman who may be the key to unlocking the secrets hiding within Mr. Mendlebee’s. Haunted by an echoing knock that sounds from nowhere, the bookstore’s staff enlists Rachel’s help to discover what’s rotten at the heart of the repository. As they do, these misfits and magical mavericks form a bond as solid as steel and as true as their hearts. But will their little community be enough to save the bookstore… and the world?

Because Mr. Mendlebee’s is coming undone, and won’t stop until the truth is out.

320 pages, Hardcover

Expected publication November 17, 2026

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About the author

Rebecca McKee

2 books45 followers
Rebecca McKee is a graduate of the University of Iowa. She’s lived in seven U.S. states and never knows where she’ll wind up next, though she can count on having her husband and two, maybe three, cats in tow. Her work has received the Iowa Chapbook Prize and has appeared in Prairie Schooner, Grain Magazine, and apt, among other publications. Mr. Mendlebee’s Pandimensional Literary Repository (and Yarn) is her debut novel.

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5 stars
11 (36%)
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8 (26%)
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9 (30%)
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Displaying 1 - 24 of 24 reviews
Profile Image for Mike.
Author 44 books204 followers
Review of advance copy received from Netgalley
July 5, 2026
I picked this up (pre-publication, via Netgalley) largely because the title reminded me of Mr. Penumbra's 24-Hour Bookstore , for which I have a fondness despite its imperfections. It doesn't have many other similarities to Penumbra apart from the title (and, obviously, a wondrous bookstore); this bookstore is somehow holding the universe together, is located in a small coastal town in New England rather than in Northern California, and is only visible to people who need something from it.

We start out being told that something is awry in the state of the universe that the bookstore holds together, and then we get a long sequence of different points of view from the people who work there, a customer, and the roommate of one of the workers, all of whom are sensing some sort of wrongness they can't put their finger on and are usually doing their best to ignore, and most of whom have (it is hinted, and gradually revealed) secrets they are ashamed of. It has the feel of something that could turn much more horror than cozy. Spoiler in case you need to know which in order to decide whether to read it:

This long middle section takes up most of the book, and for me moved too slowly. Just past half-way, I got bored enough with it, and uncomfortable enough with the constant hints of something wrong that wasn't yet being revealed, that I went off and read another book. But I did come back and finish it, and I'm glad I did, because the ending is compelling and pulls together the carefully-set-up backstories of the characters, all of whom needed to learn something and some of whom also needed to teach something to one or more of the others. My five-star rating is because it has a degree of psychological depth and (like one of the characters in the story) adeptly weaves together a number of threads. It's not, as I've mentioned, without its flaws - the tell-don't-show prologue, the slow-moving middle, and also a character, Violet, who I didn't feel was sufficiently developed for the weight she bears in the plot to hit as hard as it could have. But even if Goodreads would let me drop my pre-publication five-star rating to four - which it won't - I might leave it at five anyway, though it's only just in that zone. Call it a strong four-and-a-half.

The copy editing is good; I could quibble about the instances of "may" that should be "might" and the occasional missing past perfect where I personally would include one, but hardly anyone writing these days doesn't make those mistakes, and most people don't seem to notice.
Profile Image for Jamie.
531 reviews946 followers
Review of advance copy received from NetGalley
August 27, 2026
I am a sucker for any book with a quirky title, so I knew from the instant that I first saw Mr. Mendlebee's Pandimensional Literary Repository (and Yarn) that I was going to have to read it. Plus, there's a cat (who I thought would probably talk but didn't) and pretty much every book is made better by having a cat character.

And, well, lots of readers are going to love this one. It's ethereal and kind of dreamlike and it's full of love and loss and mystery and found family and magic and all of the things that make for a touching and emotional cozy fantasy read — think T.J. Klune without the gay romance and you'll have a pretty good idea of what to expect. There's a sentient bookstore and strange characters and, yes, lots and lots of yarn, and it's all rather unique.

But (and there's always a but!), I dunno, I think it maybe just wasn't the book for me? I'm usually obsessed with these cozy fantasy found family stories, but I never quite managed to get into this one. I'm not exactly sure why, but I think it was just all a little too vague and mysterious and the characters, despite their uniqueness, were kind of … bland? I could never quite visualize what was happening and I didn't buy the romance, mainly because Marcus had the personality of a wet paper sack. It also didn't help that I had the big twist figured out by about the 35% mark, and I'm not particularly good at sussing out such things.

At the same time, though, it's just such a unique tale that you can't help but to keep reading? None of it quite makes sense and everything is vague and wonky, but also you keep thinking that an explanation is surely right around the corner. I was kind of apathetic about the whole thing but I also never considered DNF'ing because I wanted to see how it was going to end (which I realize is a bit of a contradiction and makes very little sense).

And I did like the ending, even if it was just as vague and dreamlike as the rest of it. I mean, the epilogue is as saccharine as you might expect from a book like this, but the actual climax is … satisfying.

So, yeah. I've no idea how to rate this one or even really how to feel about it. It was decidedly not my kind of book and yet I found it oddly compelling. 3 stars, maybe?

Many thanks to NetGalley and G.P. Putnam's Sons for providing me with an advance copy of this book to review. Its expected publication date is November 17, 2026.
Profile Image for Jen.
117 reviews
Review of advance copy received from NetGalley
June 9, 2026
First, and most importantly, the bookstore is sentient! I love a sentient house, and this store had a personality and a voice that made itself known. While the title is a bit of a mouthful, it’s where most of the story takes place so it seems fitting. The writing is fantastic. I was pleasantly surprised after I’d finished it to see this was the author’s first book. I would definitely read a future book from her!

Now, the story itself is a slow burn of a journey. At about 30% in, I wrote in my notes “it’s very mysterious and secretive with little movement in plot.” There was a lot of gut churning, secret keeping and vaguely ominous mutterings and happenings going on, which held my interest, but I did kind of wonder when we were going to get a move on. The POV changes between all the characters, which can be chaotic if not done well, but it worked so nicely here to keep my interest during the first half of the book while it laid the necessary groundwork. There were a few times I did feel like the characters were repeating themselves a bit, and the suspense was drawn out a smidge longer than strictly necessary, but those are very minor complaints.

Once it hit its stride, a little over halfway through, the action really took off, and I had a hard time putting it down. I don’t want to give too much away because I think half the enjoyment comes from not knowing too much going in. This was an immersive story, and the descriptions were written so well I felt like I was walking through the halls, hearing the books whisper and the walls creak and groan. The imagination that went into creating such a magical place, where there are books only the people they’re meant for can read, crates of merchandise that show up at random, and the books decide where they want to be shelved, is impressive. The yarn plays a very big part in the story as well, and I really liked the visual of it being strung randomly throughout the store.

This is a story about love and loss, longing and hope, and finding where you’re meant to be. All in all I really enjoyed this one, and would recommend it to anyone who likes mysterious magical realism with heart.

4.5 stars rounded up to 5

Thank you to Putnam for allowing me to read an advanced copy. All thoughts and opinions are my own and freely given.
Profile Image for the_bookishbee_.
103 reviews2 followers
Review of advance copy received from NetGalley
July 28, 2026
• Review of advance copy received from publisher •

The magic in this story… instantly obsessed. There's something so enchanting about a story where the house has a personality of its own, and the Repository completely stole my heart. This wonderfully odd, semi-sentient bookshop creaks, whispers, and seems to know exactly what its residents (and visitors) need, making it feel every bit as alive as the people who call it home. Exploring its halls and discovering all its little secrets was the best time.
 
The Repository has the ability to find the book perfect for each reader, while remaining unseen to others.  Something is off within its walls though, the yarn is taking over and mysterious, unexplained events are spilling out into the every day world. These events are what bring our MC’s together… by coincidence or fate, is a mystery to be discovered as you move through the story. 

My fave character, by far was Muriel the cat. Every time she appeared, I was smiling because she always seemed to know far more than everyone else. She has that perfect magical cat energy that def makes you wonder who is really in charge.

The start of the story is a bit slow while the mystery is setting up, but I didn’t really mind as this time is spent getting to know the characters, Repository and atmosphere overall.  By the second half, I was well into the mystery, making wild guesses and trying to predict the ending. There was a couple of twists I predicted but the ending… I didn’t see coming. Love when the ending surprises you like that 🩷.

Some of the themes woven through this story are ones of grief, hope, belonging and the families we choose. It’s cosy and whimsical, but also emotional as it celebrates the way we find certain people when they need it most.  Rebecca McKee has definitely created a world I would happily return to and I’m excited to read whatever she writes next.
Profile Image for Leanne.
1,674 reviews118 followers
Review of advance copy received from NetGalley
July 23, 2026
Mr Mendlebee’s Pandimensional Literary Repository (And Yarn) is an utterly enchanting delight—whimsical, cozy, and brimming with the kind of bookish magic that makes you want to step straight into its pages. Rebecca McKee has crafted a world that feels both fantastical and comfortingly familiar, full of oddities, secrets, and characters who shine with heart.

The Repository itself is a standout: a pandimensional bookstore filled with lost objects, dangerous curiosities, and shelves that seem to breathe. It’s the perfect backdrop for a story about belonging, bravery, and the unexpected families we build along the way. Violet’s ghostly visions set the mystery in motion, and Rachel’s return—breaking the one rule of the bookstore—adds a lovely emotional thread as she unravels truths that have been tucked away for far too long.

The supporting cast is irresistible: the Yeti‑like Book Keeper, the Yarn Weaver with her quiet wisdom, the awkward clerk finding his place, and Muriel the cat, who is absolutely more than she appears. Their dynamic gives the story warmth and humor, and the bond they form feels genuine and deeply satisfying.

McKee balances whimsy with stakes, weaving a mystery that’s engaging without ever losing the cozy charm at its core. The writing is vivid and cinematic, full of imaginative touches that make the Repository feel like a character in its own right.

A magical, heartwarming tale perfect for readers who love enchanted bookstores, found families, and stories that celebrate the strange, wonderful threads that tie us together. It’s whimsical in all the best ways and left me smiling long after I finished.

with thanks to Rebecca McKee, the publisher and netgalley for the ARC
Profile Image for Eva_812.
590 reviews
Review of advance copy received from NetGalley
July 20, 2026
Thanks to NetGalley for this ARC!

This is a story about love and loss, about being lost and being found. But it is also about someone who has a really boring secret, someone who puts her nose where it doesn't belong, someone the author keeps calling a coward and forgot the rest of his personality, the biggest and most obvious walking red flag, and someone who was loved beyond measure but about whom we don't know a lot.
This made this book not a whole lot of fun to read. About the first half of the book, barely anything happens. There's a lot of new little lines of mysteries being set out, but the follow-through doesn't happen for a while. And some of the revelations were quite underwhelming.
I found myself really bored and forcing myself through it. The ending did make up for it, but the "plottwist" about Rachel's great-great-grandmother had me so annoyed!! It didn't even really make sense, because we didn't know anything about her!!
And the romance... the romance? I don't know. I didn't believe it. Neither of them should've been involved in the first place, but I just didn't see them together. Maybe because Rachel already annoyed me because it didn't make sense she would stick her nose where it doesn't belong and Marcus because I don't think he had a personality? He felt really flat for me.

I had some good expectations because the title is quite fun, and the description sounded great, but we barely got to see Blorna and Zelda until the end, and they were the more interesting characters. Overall, I think the idea was great but the execution took too long and left me dissatisfied.
19 reviews
Review of advance copy received from NetGalley
May 17, 2026
*sniff* A beautifully sweet, emotional fantasy about love, friendship, and learning to move on in the wake of grief. The mysterious Mr. Mendlebee runs a uniquely magical bookshop, where people who need it can find exactly the book they need. With him in the shop are his friend Violet, the mysterious Yarn Weaver Zelda, Blorna the Book Keeper, and Steven, a regular guy trying to escape his regular life who ends up as clerk of the most eccentric shop he's ever been in. One day, the shop's routine is interrupted by Rachel, an unusual customer on the search for her great=great-grandmother, who disappeared from her family's lives (and seemingly history) long ago, becoming the shop's first returning customer. Rachel's arrival sets off a string of events, in which her, Steven, Steven's roommate Marcus, and the shop's residents come to learn about the shop's history, Mr. Mendlebee, and themselves. A fantastic read and an excellent debut, one I'd highly recommend for fans of The Ten Thousand Doors of January and The Book of Lost Hours.

Thanks to NetGalley for the eARC.
Profile Image for Keeley Ribchester.
310 reviews6 followers
Review of advance copy received from NetGalley
July 10, 2026
The title of Mr. Mendlebee’s Pandimensional Literacy Repository (and Yarn) immediately caught my attention, and although I was completely new to Rebecca McKee’s work I’m so glad I requested this one to read and review.
What a wonderfully imaginative story that blends magical realism, mystery, friendship, grief, and hope into something that feels both unique and surprisingly heartfelt. The concept of a mysterious bookshop quietly holding the universe together is incredibly creative, and I loved uncovering its secrets alongside the characters.
The characters in the book are full of flaws and are relatable people, each carrying their own emotional baggage. Watching their individual journeys slowly intertwine was one of the book’s biggest strengths. The pacing is intentionally slower in the first half as the world and characters are established, but the payoff is well worth it as everything comes together in a satisfying and emotional conclusion.
Rebecca McKee’s writing has a warm, whimsical quality that makes even the strangest moments feel believable, and I’ll definitely be looking out for more of her books in the future.

If you enjoy stories filled with magical bookshops, found family, hidden worlds, and emotionally driven fantasy, I’d recommend Mr. Mendlebee’s Pandimensional Literacy Repository (and Yarn). Fans of The Midnight Library by Matt Haig, The Starless Sea by Erin Morgenstern, Legends & Lattes by Travis Baldree are likely to enjoy this enchanting read.📚✨

Profile Image for Morgan Pennington.
240 reviews1 follower
August 22, 2026
Received an ARC from a Goodreads giveaway.

I love books set in magical libraries or bookstores. This setting was original, vivid, and easy to picture. However, the first half of the book felt a bit disjointed and unfocused. I would have preferred a more straightforward, linear path that would fit a 300ish page book better. The characters also felt distant, so I did not connect with them deeply.

What I liked: The setting was magical, immersive, and easy to imagine. A few surprising turns kept me reading and the vibe was a fun, cozy fantasy and mystery mix.

A few things I would change:
The first half of the books plot. It felt a little scattered and unfocused which made it difficult to follow. The character introductions also felt rushed and lacked emotional depth.

Overall, it is a fun, cozy read with a great setting. I recommend it if you want a mystery with a magical vibe. 💙📚
Profile Image for Farah G.
2,497 reviews31 followers
Review of advance copy received from NetGalley
July 17, 2026
Mr Mendlebee's pan-dimensional book repository is a remarkable place, and the yarn in the title plays its own role in making it so. So do its diverse and quirky characters, who each have their own charms and will make a place for themselves in the reader's heart. But their peaceful - if peculiar - existence is now under threat from an unexpected source...

This is a cosy fantasy read which delivers plentifully on creative story telling, and will be loved by anyone who likes whimsical tales and warmth in world building. It easily gets 3.5 stars.

I received a free copy of this book from Netgalley in exchange for an honest review
Profile Image for Stardust Booklover.
46 reviews4 followers
Review of advance copy received from NetGalley
August 8, 2026
The magical bookstore and all the weird, quirky characters were interesting, but there was so much buildup and hinting about the mystery that I kept waiting for something to actually happen, and the middle started to feel repetitive. I also had a hard time connecting with the characters, which made the slower parts even harder to get through. I did like the themes of grief, friendship, and found family, and I can definitely see why some readers enjoyed it. But for me, the great concept wasn’t enough to make up for the lack of emotional connection. I finished it, but honestly, I was pretty relieved when it was over.
Profile Image for BonniePB.
118 reviews7 followers
Review of advance copy received from NetGalley
June 8, 2026
⭐⭐⭐ - Neutral

Alongside its ridiculously long title, this book initially caught my attention with its highly whimsical cover, prose, and the premise of a semi-sentient magical book shop. The characters, many of whom have alliterative names, are also kinda quirky and eccentric yet have secrets that are both impacting and potentially impacted by the repository.

This book wasn't for me in the end, but I would recommend it to anyone who's looking for a contemporary cozy fantasy about friendship, found family, and loss.

Thanks to Putnam for the eARC via NetGalley.
57 reviews2 followers
Review of advance copy received from NetGalley
July 3, 2026
3.5 stars rounded down.⭐
This is a story about love, friendship, grief and fear. It has a sentient bookstore, a cat, a Yeti-like book keeper and lovely characters: all the ingredients for a wonderful book, but it didn’t quite work for me. The writing got me all tangled up. The pacing was very slow at the start and quite fast towards the ending. I did enjoy the general sentiment of the book and loved the world that was built.

Thanks to Michael Joseph, Penguin Random House and NetGalley for the opportunity to read this review copy.
Profile Image for Krystal.
980 reviews28 followers
Review of advance copy received from NetGalley
July 23, 2026
This book dithered a lot for me - I felt like I was hit over the head with the backstory for much longer than was needed. I did read it very quickly as I wanted the book to finally start to move forward and I very much adored (most of) the characters populating this odd TARDIS-like bookstore where the books simply appear on the doorstep and one must make sure not to step on the yarn everywhere. The plot, once it starts to move, builds nicely and had a few good twists along the way to keep me on my toes. Plus, one has to enjoy a book with such a delightful cat.
75 reviews1 follower
August 25, 2026
What would you do if you went in a tiny bookstore that was 20 times larger than possible? Why is there colored yarn on the floor? Why did I get a bell from the clerk while looking for my book? Where are other customers? What is knocking?

I imagine those questions for the newest customer, Rachel, at Mr. Mendlebee’s Pandimensional Literary Repository. Where things aren’t what they seem or what you think they seem! Still what’s up with the yarn? She is looking for a diary written by her Great Grandmother.

The bookstore is a wonderfully described magical place. I could totally see it in my mind. What a cast of magical characters inside! The mere mortals aren’t too bad either. Misfits that find each other without looking.

I loved this book once the set up was done after the first 20 or so pages. The writer has a gift of setting the stage so you can see it in your mind. Then the surprise that I was seriously invested in all the characters - even ones I’m not sure I like. The story within a story but really it’s all one story was wonderful. The themes of good & evil, friendships, family and sense of duty were strong. The struggle was real.

If you like bookstores with a somewhat complex plot sprinkled with magic this book is for you!

10 reviews4 followers
Review of advance copy received from Goodreads Giveaways
August 18, 2026
it's charmingly pleasant read so far. Characters are cozily quirky. I haven't finished yet, though it maybe fairly quick, it's been awhile since I have sat down and wondered where the day went. A good easy read, by that you can put it down and pick it easily, though you definitely will find a stopping first. I think other cozy mystery, fantastical repository book readers will definitely enjoy this.
Profile Image for Sweet Book Pages.
156 reviews1 follower
Review of advance copy received from NetGalley
June 5, 2026
A sweet, cozy fantasy about a magical bookshop and unexpected friendships that makes for the perfect bedtime read when you want something gentle, comforting, and easy to drift off with.

I received this book from NetGalley. Thank you to Rebecca McKee and Putnam | G.P. Putnam's Sons. All opinions are my own.
Profile Image for Bright Book Reviews.
297 reviews4 followers
Review of advance copy received from NetGalley
June 27, 2026
Books, magic, quirky characters. I was ready to love this story.
I stepped away from the book just over 1/4 of the way through as the story’s rhythm didn’t match what I was looking for at the moment.

Thank you, G.P. Putnam's Sons, for providing this book for review consideration via NetGalley. All opinions are my own.

Release date: November 17, 2026
Profile Image for Mrs S.
46 reviews2 followers
Review of advance copy received from NetGalley
July 23, 2026
Review of an advance copy from NetGalley. To be honest this book took quite a while to grab me. Not a great deal happens in the first half of the story, just a lot of introductions and hints of a great tale. It does then take off and everything begins to come together and make sense. By the end I was crying with the emotion of the story, with the love and loss within.
1 review
Review of advance copy received from Author
August 12, 2026
This book was fantastic! Admittedly it was a little slow in the beginning but DEFINITELY worth hanging in there until the end. I love the author’s writing style which makes you feel like you are right there in this magical repository. I was actually sad to have to leave in the end (and even shed a few tears). I definitely look forward to reading more from this author.
Profile Image for Tatiana Schlote-Bonne.
Author 3 books518 followers
Review of advance copy received from Author
January 4, 2026
I got to blurb this one! A whimsy, cozy fun time! Library and indie bookstore lovers, grab this one!!
Profile Image for Abigail.
624 reviews2 followers
Review of advance copy received from Indie Reviewers
August 19, 2026
John King Books meets The Spellshop and even though there are no aliens I keep thinking of Men In Black…and Warehouse 13. And of course the bookstore reminds me of a Yaga house.
Profile Image for Ally.
398 reviews517 followers
Review of advance copy received from Publisher
August 29, 2026
Got an arc from work 4.5/5, will write a proper review when slightly more awake but this isn’t what I expected it to be even if I enjoyed it nonetheless
1 review
Review of advance copy
June 30, 2026
Mr. Mendlebee's Pandimensional Repository (and Yarn) is genuinely strange, and it handles that strangeness with confidence and control. Violet carries the book with a quiet elegance that never feels overworked, and she remains compelling company throughout. Blorna feels vast and lovely, and a wondrous creature all their own.

The bookstore is the main prize. It has the mischief and presence of the great magical settings, Hogwarts among them, and it feels so brilliantly alive. The prose is sharp and heartfelt, and a sustained sense of whimsy runs through the entire book. This is an excellent read, and any reader would be fortunate to have it be a part of their library!
Displaying 1 - 24 of 24 reviews