Jump to ratings and reviews
Rate this book
Rate this book
Set in the same thrilling world as Genoveva Dimova's The Witch's Compendium of Monsters series, Ace Up Her Sleeve is a standalone, spoiler-free story featuring the fire witch Kosara, who must match wits with the Tsar of Monsters in a high-stakes card game that is equal parts magic, skill, and subterfuge . . .

The first volume in Genoveva Dimova's The Witch's Compendium of Monsters series, Foul Days, is available now! Monstrous Nights, the next volume in the series, releases October 22, 2024 and is available to pre-order now wherever books are sold!

At the Publisher's request, this title is being sold without Digital Rights Management Software (DRM) applied.

28 pages, Kindle Edition

First published August 28, 2024

5 people are currently reading
602 people want to read

About the author

Genoveva Dimova

5 books450 followers
Genoveva Dimova is a Bulgarian fantasy author and archaeologist based in Scotland. Her debut novel inspired by Bulgarian folklore, Foul Days, came out in June 2024, and the sequel, Monstrous Nights followed in October 2024. When she’s not writing, she likes to explore old ruins, climb even older hills, and listen to practically ancient rock music.

To keep up to date with news and updates about Genoveva's books, join her newsletter.

Ratings & Reviews

What do you think?
Rate this book

Friends & Following

Create a free account to discover what your friends think of this book!

Community Reviews

5 stars
45 (22%)
4 stars
72 (36%)
3 stars
73 (36%)
2 stars
7 (3%)
1 star
1 (<1%)
Displaying 1 - 30 of 46 reviews
Profile Image for Alina.
867 reviews314 followers
December 10, 2025
Ace Up Her Sleeve by Genoveva Dimova - 2.5/5★

Apparently, this is a companion story in The Witch's Compendium of Monsters series - didn’t know this before reading it. Apart from the open ending (which maybe isn’t so open in the context of the series?), it can be read by itself, even if it doesn’t offer much background.

The short story is found in Some of the Best from Reactor: 2024 Edition and can also be read on REACTOR
Profile Image for Maria reads SFF.
446 reviews116 followers
August 31, 2024
3.5 stars
A taste of "The Witch's Compendium of Monsters" that readers can enjoy either before or after reading "Foul Days".
Profile Image for Angustia⋆Cósmica.
348 reviews14 followers
October 2, 2024
With a nice little glimpse into the past, we get to see Kosara being a brave coward and snatching victory by twisting fate for a bit. A little white lie, if you will.

Did I know the turn of events ahead? Yes. Was my nose glued to my phone as I read this? Also yes.
The Zmey is a slimy, vile monster and I wanted nothing more than seeing him lose and whine.
This was a BLAST.

The second book is right around the corner so you can bet I'm waiting impatiently to see what's next.
Profile Image for S.A  Reidman.
348 reviews8 followers
November 30, 2025
Uhm ... Mam, how can you leave me hanging like that. What happens next? Now I gotta read the whole series - do I even have the time🤔I didn't start at the top, which was intriguing because now I just want to know what The Zmey does with the real Ace of Spades and take a peak into this world.

That Character:  Sofiyya Two Shadows
That scene:  The Shadow "bait n switch" scene
Favorite /Unique Quotes:
🖤  The new year had been born, but it hadn’t been baptised yet (Sounds stressful)
Curious/Unique Concepts:
■ Shadow Magic
■ domed city barrier
Cover Cause I'm a Bird: I didn't even see it really
Re-readability: well no, not really
GR Rating: 2.5⭐
CAWPILE:5
StoryGraph Challenge: 1800 Books by 2027
Challenge Prompt: 150 Short Stories Books by 2027
Profile Image for Ashley Fetterman.
Author 9 books27 followers
August 30, 2024
So Good!!

Just as written, this is completely spoiler free of the series. In fact this gives a backstory to the card game mentioned. I loved this because I feel like I got a quick peak into the past and more interactions between Kosara and Zmey - and how much they hate each other. Well written, this gives me the excitement for book 2!
Profile Image for Ali.
350 reviews3 followers
November 5, 2024
I should have waited till the end of the year to read this one, but once I've started, I had to keep reading. Can't say no to a good game of cards with a complicated background.

The story does a great job advertising the setting, and did convince me to try the author's full lenght novels.
358 reviews4 followers
March 12, 2025
While this short story is listed as 1.5 in the series, it is really .5, giving us the backstory of the fated card game between Kosara and the Zmey that is referred to in Foul Days.

I honestly can't decide if I would have preferred to read this first, so I'd already have the backstory, or if it fits better after we already know Kosara. Either way, it's a fun short story. I don't think it's quite as standalone as others do, but it certainly answers some unresolved questions from the first book, and based on description, serves as a nice setup for the second.
Profile Image for Stephanie.
139 reviews
June 23, 2025
Enter the Slavic fantasy world with a short story!

Short story of glimpse into The Witch’s Compendium of Monsters series (duology and this is novella but spoiler free). A cheeky short story involving a card game between Kosara and Zmey.

Love that it’s 32 pages long but enough to pull you into the world.

Magic? Yes. From the short story Kosara is a witch that can control her shadow— very intrigued with this whole new sort of world building and super happy to have a taste by reading the short story first.
Profile Image for Z. reads.
47 reviews1 follower
October 10, 2024
I loveee Kosara and the Zmey so much. I wish this was a bit longer but I'll take what I am granted. He is obviously insane and terrifies her but the dynamic is so delicious, I want them to be endgame idc.

"Until, desperate and tired of being alone, she returned to him." INSANITYYY. HE WANTS HER TO BE AS MISERABLE AS HE IS

It was nice getting in the Zmey's head, I would like more of that. Also, he has a soft spot for cats? 🤧
Profile Image for Sally.
731 reviews3 followers
September 13, 2024
I read this as a short story on Tor/Reactor and got to say, I am compelled to pick up the main series! The worldbuilding introduced in the novella is unmatched, a season where monsters spill out of the sky into a walled city where witches can ward others or hole up and protect themselves? Add in a villainous love interest who is also draconic with a focus on games and I am fully in.
Profile Image for 1stTimeReader.
204 reviews4 followers
September 16, 2024
This was a very enjoyable short addition to Foul Days and I enjoyed we got a different POV in this chapter! I really hope Monstrous Nights has multiple POVs as well!
Subtracting a star only because it was so short - it would have worked well as a bonus chapter in the first book, but as a standalone story, I felt it could have done more to add to the lore/story.
Profile Image for Kam Yung Soh.
960 reviews52 followers
November 3, 2024
An interesting little tale of a witch who is trying to hide from the Tsar of Monsters in a city. But when she is eventually discovered, she has no choice but to play a game of cards. However, this time, with some luck, she may be able to cheat to win and get away with it. But the deception may have a costly consequence in the future.
Profile Image for Gabrielle.
122 reviews1 follower
March 9, 2025
It's like a little flashback-stinger after the credits roll on book 1
Makes one wonder -- are we really done with the Zmey?


Also, Kosara is intelligent, talented, and gutsy -- and she has still ended up in abusive relationships.
I realize this issue is the nail to my professional hammer, but still. If I could give out reading assignments, and if I thought they would help...
Profile Image for Ariana Copeland.
301 reviews2 followers
September 7, 2024
Suspenseful!

Dimova has an incredible way of writing monsters and tension. This short story gives us the background between Kosara and the Zmey, and it’s just as intense as her book!
Profile Image for Mella aka Maron.
1,187 reviews1 follower
September 8, 2024
A quick and easy read that gives insight into the card game between Kosara and the Zmey. I wanted to give this a read before reading the second book. It’s not necessary to read but it was fun to get back into the world!
Profile Image for Marizabeth  Perez.
166 reviews
September 10, 2024
This was a good short story giving more details about what happened between Kosara and the Zmey a year before Book 1. It includes the pov of the Zmey which gives more perspective on how he viewed Kosara and their relationship.
Profile Image for Nina.
278 reviews2 followers
October 8, 2024
This was a super short story about the year Kosara managed to cheat the Tsar of monsters at cards. While there wasn’t anything wrong with this story, I felt as if it could have fit into Foul days as a fully flushed out flashback and it would have been fine.
Profile Image for aaron.
1,213 reviews15 followers
October 23, 2024
This is a wonderful little tale set in the Witch's Compendium of Monsters series and finds Kosara playing a game of cards with extremely high stakes with the Tsar of monsters. A good, quick read if you like the series.
Profile Image for Laura Jeffrey.
482 reviews3 followers
January 8, 2025
Stupidly thought this was 2.5 not 1.5 and thought huh this would've been good before book 2 🤦🏻‍♀️. So I am adding a star because it would've been perfect intro of charter and story before second book.
Profile Image for Lisa.
895 reviews10 followers
September 2, 2024
A very interesting "prequel" to Foul Days - what really did happen during that card game with the Zmey?
Profile Image for Tiffany Lamb.
93 reviews
September 23, 2024
Very quick read, tells you about the card game they play and how she was able to cheat to win a lock of his hair.
This entire review has been hidden because of spoilers.
Profile Image for Sabine.
443 reviews13 followers
September 27, 2024
I fun short story set in this world! I thought it was really interesting reading from the Zmey's POV.
Displaying 1 - 30 of 46 reviews

Can't find what you're looking for?

Get help and learn more about the design.