Kathy Asher Books in Order (Updated March 14, 2026)

Kathy Asher writes several separate romance lines rather than one single connected universe. The important choice is not “where does her bibliography start?” so much as “which shelf do you want first?” Her catalog currently splits between billionaire contemporary romance, small-town romance, silver-fox romance, sports and firefighter romance, and a darker mafia branch.

For most readers, the safest place to begin is My Irresistible Billionaire Boss if you want a representative series starter. If you want the darker side of her catalog, begin with Protecting Her Mafia Boss instead.

The map of Kathy Asher’s books

Early standalone and short-form books

These are the clearest “read whenever” entries. They do not currently sit inside a larger confirmed sequence that you need to follow first.

1. Bossy Professor (2023): A short-form off-limits romance and the easiest optional extra in the catalog, best treated as bonus reading rather than a core starting point.
2. Secret Baby For The Grumpy Billionaire (2023): An early standalone built around a grumpy billionaire, a secret-baby setup, and the fast, trope-forward style that carries into later books.
3. Best Friend’s Firefighter Dad (2024): A standalone off-limits age-gap romance that works on its own without any series setup.
4. Falling For The Billionaire Rockstar (2024): A standalone that shifts into a more celebrity-coded billionaire romance lane, separate from the later branded series.
5. Fake Dating My Bad Boy Ex (2024): A standalone fake-dating romance with a bad-boy angle, best read as an independent title.

Bad Boy Billionaire Sportsmen

At the moment, only one book is clearly attached to this line in the sources I checked, so this reads more like a label than a deep continuity track.

1. My Ex’s Bad Boy Brother (2024): The confirmed entry in this series line, centered on an ex’s-brother setup and readable entirely on its own.

Forbidden Billionaire Bosses

This is one of the cleanest places to start because the numbering is clearly listed. Read it in order.

1. My Irresistible Billionaire Boss (2024): An off-limits dad’s-best-friend and boss romance that sets the tone for this billionaire-office branch and is the best all-purpose entry point for new readers.
2. Knocked Up by the Silver Fox CEO (2024): An enemies-to-lovers, ex’s-dad, age-gap romance that keeps the forbidden-office energy going while adding the surprise-pregnancy turn.
3. Billionaire CEO’s Accidental Wife (2025): A fake-marriage, custody-conflict, and secret-pregnancy entry that closes the currently confirmed trilogy and works best after the first two.

Small Town Billionaires

This line looks broader and more loosely connected than Forbidden Billionaire Bosses. Even if each romance stands on its own, publication order is still the safest way to read it because the books are grouped as a named series.

1. Protected By My Grumpy Billionaire (2024): A grumpy-protector opening to the series that establishes the small-town billionaire lane.
2. Surprise Baby For My Ex’s Dad (2024): A hospital-set off-limits age-gap romance with an ex’s-dad setup and surprise pregnancy, placed early in the series sequence.
3. The Nanny and Her Grumpy Billionaire Ex (2024): A second-chance small-town romance that adds nanny and single-parent complications to the ongoing billionaire setting.
4. One Night with a Billionaire SEAL (2024): A military-flavored billionaire romance that expands the series’ range while staying inside the same branded line.
5. My Bossy Silver Fox CEO (2024): A silver-fox office romance inside the small-town sequence, best left in published order rather than pulled out by trope.
6. Nanny For The Small Town Billionaire (2025): Another nanny-centered entry that fits the same town-and-billionaire setup and is best read after the 2024 books.
7. Second Chance With My Dad’s Best Friend (2025): The latest confirmed Small Town Billionaires title, combining second-chance and dad’s-best-friend elements at the back end of the sequence.

HOT Firefighters & Sportsmen

This is a compact three-book line. Read it straight through.

1. My Grumpy Billionaire Soccer Star (2025): A sports-centered billionaire romance that opens this short run with the expected grumpy-athlete energy.
2. My Grumpy Billionaire Firefighter (2025): A firefighter counterpart that keeps the same branded formula while shifting from sports to emergency-services romance.
3. My Dad’s Hockey Star Best Friend (2025): An off-limits best-friend setup that closes the line by moving back into the sports side of the concept.

The Voronin Family Saga

This is the clearest dark-romance branch in Kathy Asher’s catalog. Read this one in strict order.

1. Protecting Her Mafia Boss (2025): The entry point to the Voronin books, introducing the mafia side of Asher’s catalog with protection, danger, and criminal-family stakes.
2. The Unwilling Mafia Princess (2025): An arranged-marriage style escalation that moves the family saga further into dynastic and power-based conflict.
3. Claiming His Mafia Princess (2025): A continuation of the same dark family line, best read after book two because the shared-world context matters here more than in the billionaire books.
4. Captive in His Empire (2025): A darker “captor/captive” mafia entry that currently stands as the latest confirmed Voronin novel.

Hot Silver Foxes

This looks like a trope-forward silver-fox line rather than a tightly serialized plot, but publication order is still the safest route.

1. My Billionaire Silver Fox Single Dad (2025): A silver-fox single-dad opener that establishes the line’s older-hero branding.
2. My Silver Fox Sheriff (2025): A lawman variation on the same silver-fox appeal, readable after book one without needing a heavier continuity investment.
3. Knocked Up By My Accidental Protector (2025): A protector romance with a pregnancy hook that keeps the series in its familiar trope-first mode.
4. Silver Fox Client’s Baby Surprise (2025): A client-based workplace or service dynamic with another baby-centered turn, fitting squarely into the same branded pattern.
5. My Next Door Silver Fox (2025): A neighbor-romance closer to the currently confirmed Hot Silver Foxes run.

Spence’s Family Billionaires

This is a newer series and one of the most important places to keep the order clean, because the numbering is explicit.

1. Ruined by the Billionaire (2026): A grumpy single-dad and nanny romance that opens the Spence family sequence and should be read first.
2. Tainted by the Bad Boy (2026): An enemies-to-lovers forced-proximity follow-up that continues the family-branded line.
3. Pretend Wife to the Marine (2026): A forced-proximity fake-wife setup that sits in the third slot and should not be moved ahead of the first two.
4. Pretend Marriage to Ex’s Dad (2026): A grumpy billionaire age-gap romance listed as book four in the series and best saved until the earlier Spence books are done.

Kings of New York

This is a separate newer line, not a continuation of the billionaire or mafia series above.

1. Twisted Vows (2026): The opening book in a new New York-set series, best treated as the start of a separate continuity rather than the next step after any earlier line.

The best reading order for most readers

If you want one practical route without hopping between tones too abruptly, use this path:

1. My Irresistible Billionaire Boss
2. Knocked Up by the Silver Fox CEO
3. Billionaire CEO’s Accidental Wife
4. Protected By My Grumpy Billionaire
5. Surprise Baby For My Ex’s Dad
6. The Nanny and Her Grumpy Billionaire Ex
7. One Night with a Billionaire SEAL
8. My Bossy Silver Fox CEO
9. Nanny For The Small Town Billionaire
10. Second Chance With My Dad’s Best Friend
11. Protecting Her Mafia Boss
12. The Unwilling Mafia Princess
13. Claiming His Mafia Princess
14. Captive in His Empire
15. Ruined by the Billionaire
16. Tainted by the Bad Boy
17. Pretend Wife to the Marine
18. Pretend Marriage to Ex’s Dad
19. Twisted Vows

That route starts with the clearest billionaire entry series, moves through the broader small-town books, then shifts into the darker mafia branch, and finally leaves the newest family and New York lines until the end.

Where order matters most

Order matters most in:

• Forbidden Billionaire Bosses
• The Voronin Family Saga
• Spence’s Family Billionaires
• Kings of New York

Order matters less in:

• the early standalones
• Hot Silver Foxes
• HOT Firefighters & Sportsmen
• probably Small Town Billionaires, though publication order is still the safest choice

Latest release status

The most recently confirmed Kathy Asher releases in the sources I checked are the 2026 Spence’s Family Billionaires books, with Pretend Wife to the Marine carrying a confirmed February 14, 2026 publication date.

Pretend Marriage to Ex’s Dad is listed as book four for March 2026, but the exact day was not clearly confirmed in the snippets I found, so I would treat it as a March 2026 title rather than attach a precise date without stronger confirmation.

The next clearly listed upcoming title after that is Twisted Vows, book one of Kings of New York, scheduled for June 2026.

FAQs

Do Kathy Asher’s books all connect?

No. Her catalog is split across multiple separate series and standalones.

What is the best first Kathy Asher book?

For most readers, My Irresistible Billionaire Boss is the best first pick because it is a clearly numbered series starter and a good sample of her contemporary billionaire style.

What if I want the darkest series first?

Start with Protecting Her Mafia Boss and read the Voronin Family Saga straight through.

Are the silver fox books a separate continuity?

Yes. Hot Silver Foxes is its own branded line and should be treated separately from Forbidden Billionaire Bosses and Small Town Billionaires.

Should I read the 2026 books before the older ones?

Only if you are specifically trying to catch up on the newest series. For most readers, starting with an earlier series opener is the cleaner experience.

Final recommendation

Start with My Irresistible Billionaire Boss if you want the smoothest introduction to Kathy Asher’s work. Move next into Small Town Billionaires if you want more contemporary billionaire romance, or switch to The Voronin Family Saga if you want the darker mafia side.