A billionaire romance series
The Wilder Brothers
Four brothers. Four empires. Four women who refuse to be conquered. Spicy, swoony, and full of brooding billionaires who finally meet their match, set in the boardrooms, penthouses, and stolen moments of New York City.
Book One
The Billionaire's Redemption
She hates him. He deserves it. But redemption sure does look good in a tailored suit.
perfect if you love
billionaire romance
brother's ex-best friend
accidental pregnancy
second chance
office romance
the story
My new boss?
Hot. Heartbreaking. And hell-bent on making me his.
Ethan Wilder.
My brother’s ex-best friend. My ex-crush. My current problem in an expensive suit.
Five years ago he seduced me to steal my brother’s company secrets.
(He failed, for the record.)
And now, thanks to a contract straight from hell—and my mother’s charming debts—I’m stuck working for him for three soul-crushing years.
And Ethan?
He’s made it his new mission to win me over.
With looks that melt me on the spot. With words that blur every line. And with an obsession that’s got ‘HR complaint’ written all over it.
I told myself I wouldn’t fall for him again. I told myself I wouldn’t end up in his bed.
Spoiler: I did.
And when I tried to walk away?
Well… let’s just say the stick turned pink.
Ethan Wilder never loses.
And this time, he wants it all—me, the baby, and maybe a wedding band while he’s at it.
The Billionaire’s Redemption is a billionaire, brother’s best-friend-turned-rival, age gap, second-chance suspense romance with a happily ever after! It’s a stand-alone with open-door scenes, and includes an ex-turned-boss who is willing to go to any length to fix the mistakes of his past and win back the heart of the woman he can’t live without.
perfect if you love
billionaire romance
brother's ex-best friend
accidental pregnancy
second chance
office romance
What readers have to say
"Ethan Wilder ruined every book boyfriend who came before him. The tension, the banter, the way he looks at her — KJ Raffat writes the kind of slow burn that genuinely makes your hands shake."
"I am OBSESSED. The prank wars in book two had me crying with laughter, and then she goes and writes a chapter that gutted me. KJ writes heroes who fall first AND fall hardest — exactly my brand."
"A Merry Misdeal is officially in my Christmas re-read rotation forever. Olivia and Alexander? Iconic. Fake dating + only one bed + grumpy boss energy was everything I needed."
"A Fiery Fall Love is exactly the cozy small-town romance I needed during pumpkin spice season. The matchmaking grandma had me in stitches. KJ has a gift for making side characters feel real."
"The way KJ writes yearning should be illegal. I read this in one sitting at 2am, then immediately bought every other book in the series. Auto-buy author for life."
"Sweet AND steamy is right. The romance hits all the swoony beats but the spice is genuinely chef's kiss. I love that her heroines have spine — they don't just fall, they make him work for it."
"Ethan Wilder ruined every book boyfriend who came before him. The tension, the banter, the way he looks at her — KJ Raffat writes the kind of slow burn that genuinely makes your hands shake."
"I am OBSESSED. The prank wars in book two had me crying with laughter, and then she goes and writes a chapter that gutted me. KJ writes heroes who fall first AND fall hardest — exactly my brand."
"A Merry Misdeal is officially in my Christmas re-read rotation forever. Olivia and Alexander? Iconic. Fake dating + only one bed + grumpy boss energy was everything I needed."
"A Fiery Fall Love is exactly the cozy small-town romance I needed during pumpkin spice season. The matchmaking grandma had me in stitches. KJ has a gift for making side characters feel real."
"The way KJ writes yearning should be illegal. I read this in one sitting at 2am, then immediately bought every other book in the series. Auto-buy author for life."
"Sweet AND steamy is right. The romance hits all the swoony beats but the spice is genuinely chef's kiss. I love that her heroines have spine — they don't just fall, they make him work for it."
Where to buy
Book Two
The Billionaire's Rival
Office enemies. Bedroom frenemies. Now she's the only one he wants.
perfect if you love
billionaire romance
enemies to lovers
office rivals
fake dating
enemies with benefits
the story
Of all the offices in all the world, my college rival had to walk into mine… with that smug face.
Caleb Wilder.
Billionaire. Marketing genius. World-class pain in my ass.
We’ve been enemies since college—battling over grades, internships, and basically anything else we could turn into a competition. So of course, when he shows up in my office under an alias, I’m the only one who recognizes him. Everyone else sees just another hotshot hired for a big project. Me? I see the same arrogant jerk who’s been trying to outdo me for years… and now he’s in my department, pretending he belongs.
We’re forced to work side by side, trading barbs and office pranks like it’s a competitive sport. He pushes my buttons. I push his right back. And the worst part? Somewhere between all the fighting, the tension started to feel… electric.
So when one too many drinks leads to one very naked night? We make a deal.
No strings. No feelings. Just enemies with benefits.
But then my petty, jealous ex starts sniffing around again, and suddenly Caleb is sliding closer. Putting his arm around me. Calling himself my boyfriend with that infuriating smirk, like this was his idea all along.
So now I’m stuck pretending to date the man I can’t stand… while trying to remember why I ever agreed to let him in my bed.
And if I’m not careful? He just might win a game I never meant to play.
The Billionaire’s Rival is a billionaire, enemies-to-lovers, forced proximity, office romance with a happily ever after! It’s a stand-alone with open-door scenes, and includes two college rivals who are again face to face after years. Only this time, the stakes are raised and they can no longer ignore the fire between them.
perfect if you love
billionaire romance
enemies to lovers
office rivals
fake dating
enemies with benefits
What readers have to say
"I really love a book with banter and Caleb’s and Eve’s banter knocked it out of the park."
Read full review"The Billionaire’s Rival is the ultimate mix of competitors to lovers and fake dating. It pulled me in on the first page and didn’t let go. I laughed, I cried and I blushed…a lot."
Read full review"A fun office romance between bitter rivals with realistic characters and surprising depth."
Read full review"Raffat does a great job developing both characters beyond the usual billionaire-romance trope."
Read full review"I absolutely loved every moment I spent immersed in this book."
Read full review"More than once I felt a bit an intruder: the author managed to convey a chemistry and tension between the two protagonists like few other times I have experienced."
Read full review"I fell in love with the characters and I was genuinely rooting for them."
Read full review"I love that both characters are wholly independent and don't naturally have to rely on anyone else."
Read full review"I wasn’t even prepared for the Wilder family, but I’m in awe of their sibling bond and their witty banter!"
Read full review"Raffat's storytelling is so engaging that it felt like I was watching a movie unfold before my eyes."
Read full reviewWhere to buy
Book Three · Pre-order
The Billionaire's Runaway
She left him at the altar. Now he's the only one who can keep her safe — and the last man on earth she should trust with her heart.
Pre-order — releases June 2026
the story
I ran from the wedding. I should have run from him years ago.
Sebastian Wilder was supposed to be my way out. Marrying the youngest Wilder brother was the plan my father drew up before he died — a merger of two families, two empires. I agreed because I had no other choice.
Until I did.
I left him at the altar wearing a borrowed dress and riding a stolen motorcycle. I thought I was free.
I was wrong.
Because someone wants me dead. Someone with my father’s signature on the contract that promised me to Sebastian. And the one person who can protect me — the one person whose name on a marriage certificate would make me untouchable — is the same man I publicly humiliated in front of three hundred guests.
Sebastian Wilder doesn’t forgive. He doesn’t forget. But he might just save me. If I’m willing to walk back down that aisle.
perfect if you love
runaway bride
protective hero
marriage of convenience
forced proximity
slow burn
mafia romance
she falls first
he falls harder
What readers have to say
"Ethan Wilder ruined every book boyfriend who came before him. The tension, the banter, the way he looks at her — KJ Raffat writes the kind of slow burn that genuinely makes your hands shake."
"I am OBSESSED. The prank wars in book two had me crying with laughter, and then she goes and writes a chapter that gutted me. KJ writes heroes who fall first AND fall hardest — exactly my brand."
"A Merry Misdeal is officially in my Christmas re-read rotation forever. Olivia and Alexander? Iconic. Fake dating + only one bed + grumpy boss energy was everything I needed."
"A Fiery Fall Love is exactly the cozy small-town romance I needed during pumpkin spice season. The matchmaking grandma had me in stitches. KJ has a gift for making side characters feel real."
"The way KJ writes yearning should be illegal. I read this in one sitting at 2am, then immediately bought every other book in the series. Auto-buy author for life."
"Sweet AND steamy is right. The romance hits all the swoony beats but the spice is genuinely chef's kiss. I love that her heroines have spine — they don't just fall, they make him work for it."
"Ethan Wilder ruined every book boyfriend who came before him. The tension, the banter, the way he looks at her — KJ Raffat writes the kind of slow burn that genuinely makes your hands shake."
"I am OBSESSED. The prank wars in book two had me crying with laughter, and then she goes and writes a chapter that gutted me. KJ writes heroes who fall first AND fall hardest — exactly my brand."
"A Merry Misdeal is officially in my Christmas re-read rotation forever. Olivia and Alexander? Iconic. Fake dating + only one bed + grumpy boss energy was everything I needed."
"A Fiery Fall Love is exactly the cozy small-town romance I needed during pumpkin spice season. The matchmaking grandma had me in stitches. KJ has a gift for making side characters feel real."
"The way KJ writes yearning should be illegal. I read this in one sitting at 2am, then immediately bought every other book in the series. Auto-buy author for life."
"Sweet AND steamy is right. The romance hits all the swoony beats but the spice is genuinely chef's kiss. I love that her heroines have spine — they don't just fall, they make him work for it."
Where to buy
What readers have to say
★★★★★
ARC reviewer here — Sebastian Wilder might be KJ’s most devastating hero yet. Quiet, controlled, and absolutely undone by Iris. I screamed at my Kindle multiple times.
— Maya I.
Early ARC reviewer
★★★★★
If you’ve been waiting for the youngest Wilder brother’s story — it was worth every second. The marriage of convenience trope has never been better.
— Bookstagram
Pre-release coverage
★★★★★
I read this in one sitting at 2am and I have regrets only because I now have to wait for everyone else to read it so I can scream about it with them.
— Lana K.
Beta reader feedback
Where to buy