My Sister Married the Monster
Piper Hayes · Completed · 9.1k Words
Introduction
I woke up reborn on the night they buried him.
Standing in that funeral chamber, watching the lawyer crack open the sealed will, I discovered I could suddenly hear thoughts. My sister Vivienne's voice ripped through my head: Not marrying that butcher. No way in hell.
She lunged forward and grabbed Adrian—the refined bastard son who looked like a lawyer instead of a mobster. The same "perfect gentleman" I married in my past life.
Which left me with Dominic Callahan. The scarred heir. The Executioner.
Last time around, Vivienne married Dominic and got beaten down for years. I married Adrian and lived like a queen.
I almost laughed out loud.
Because she has no idea—this time, she's the one who grabbed the monster.
Chapter 1
Cass's POV
I wake up reborn on the night they bury my father.
In the underground chamber, two candles flicker beside his portrait. The lawyer cracks open the sealed will and starts reading out the debt: my father owed the Callahan family a life. His two daughters have to repay it through marriage.
Two men stand at the far end of the room.
One is Dominic Callahan, the eldest son—the family's "Cleaner." He's got a scar running from his brow down to his jaw. People call him the Executioner.
The other is Adrian Callahan, the bastard son. He's in a nice suit with this gentle smile plastered on his face. Looks more like a lawyer than a mobster.
Not marrying that butcher this time. No way in hell.
A voice rips through my head.
I spin toward Vivienne. Her mouth is shut, but that voice is definitely hers. My heart slams against my ribs as I stare at her—can I actually hear what people are thinking?
Adrian's the smart choice. Refined, cultured. I just need to grab him before she does.
There it is again. Everything clicks into place. I'm not just back from the dead—I can read minds now. And from what she's thinking, she's been reborn too.
The second the lawyer finishes, Vivienne jumps in. "I choose Adrian."
She walks straight to him and pulls out the ceremonial dagger from her waist. The blade cuts across her palm, blood pooling in her hand, and she doesn't even flinch as she grabs Adrian's hand. Their blood mixes. The pact seals.
The lawyer turns to me. "Then you'll marry Dominic Callahan. Miss Cassandra Hayes."
Vivienne's eyes light up with victory. Your turn to suffer now, little sister.
In my past life, Vivienne married Dominic.
That man was cold as stone. Never brought her to family business, never let her in. Every time she tried getting close, she got punished for "breaking family rules"—whippings, lockdowns, stripped of everything. Five years in, she still hadn't given him an heir, so Dominic's mother kicked her out herself and took away the Callahan name.
I married Adrian. He was perfect—thoughtful, sweet, took me to fancy parties, bought me cars and jewelry, kept me away from all the violence. Everyone said I'd gotten lucky.
Then Dominic died in a gang shootout. Adrian took over the family, and overnight I became the queen of the underworld.
Vivienne lost her mind with jealousy. Staged a car accident while I was out. Killed us both.
I take the dagger and walk over to Dominic. The blade stings when it cuts into my skin, but my hand stays steady.
When I grip his hand, I try reading his thoughts—nothing. His mind's completely silent, like there's nobody home.
But when Adrian looks at Vivienne, I catch what he's thinking.
Sweet little doe. Bet she cries pretty.
My breath stops for a second. I'm staring at that gentle face of his.
Whatever's hiding under that smile reminds me of things from my last life I'd rather forget.
The lawyer clears his throat. "Please complete the blood oath."
I snap out of it and glance at Dominic next to me. He's just waiting, expression blank, that scar looking even nastier in the candlelight.
But somehow, standing beside him feels safer. At least with him, the danger's right there on the surface.
This time, I'm changing how this ends. I'm making it out alive on my own terms.
Three days after the blood oath, we have to show up to dinner. Family rules.
It's at the Callahan family's private club.
Adrian pulls up in a silver sports car to get Vivienne, and right at the club entrance he drapes this expensive-looking fur coat over her shoulders.
He walks into the hall with her on his arm, showing her off to everyone. "This is my fiancée. I'd die for her."
Everyone eats it up.
"The second son's such a gentleman."
"He treats her so well."
Meanwhile, I'm sitting alone in whatever basic car the family sent, staring out at the neon lights.
When I walk into the hall, maybe three low-level guys bother saying hi. Dominic's nowhere to be seen.
I can hear every thought around me crystal clear.
Poor girl, marrying the Executioner. She's done.
He didn't even show up tonight. Dominic obviously doesn't give a damn about this marriage.
She'll end up in the punishment room soon enough.
Vivienne strolls over in that fur coat, sweet smile on her face.
"Look how good he is to me." She makes sure I see the jeweled buttons up close.
Then she lowers her voice, all fake concern. "So where's Mr. Dominic? Don't see him anywhere."
Last Chapters
#10 Chapter 10
Last Updated: 12/31/2025#9 Chapter 9
Last Updated: 12/31/2025#8 Chapter 8
Last Updated: 12/31/2025#7 Chapter 7
Last Updated: 12/31/2025#6 Chapter 6
Last Updated: 12/31/2025#5 Chapter 5
Last Updated: 12/31/2025#4 Chapter 4
Last Updated: 12/31/2025#3 Chapter 3
Last Updated: 12/31/2025#2 Chapter 2
Last Updated: 12/31/2025#1 Chapter 1
Last Updated: 12/31/2025
You Might Like 😍
Falling for my boyfriend's Navy brother
"What is wrong with me?
Why does being near him make my skin feel too tight, like I’m wearing a sweater two sizes too small?
It’s just newness, I tell myself firmly.
He’s my boyfirend’s brother.
This is Tyler’s family.
I’m not going to let one cold stare undo that.
**
As a ballet dancer, My life looks perfect—scholarship, starring role, sweet boyfriend Tyler. Until Tyler shows his true colors and his older brother, Asher, comes home.
Asher is a Navy veteran with battle scars and zero patience. He calls me "princess" like it's an insult. I can't stand him.
When My ankle injury forces her to recover at the family lake house, I‘m stuck with both brothers. What starts as mutual hatred slowly turns into something forbidden.
I'm falling for my boyfriend's brother.
**
I hate girls like her.
Entitled.
Delicate.
And still—
Still.
The image of her standing in the doorway, clutching her cardigan tighter around her narrow shoulders, trying to smile through the awkwardness, won’t leave me.
Neither does the memory of Tyler. Leaving her here without a second thought.
I shouldn’t care.
I don’t care.
It’s not my problem if Tyler’s an idiot.
It’s not my business if some spoiled little princess has to walk home in the dark.
I’m not here to rescue anyone.
Especially not her.
Especially not someone like her.
She’s not my problem.
And I’ll make damn sure she never becomes one.
But when my eyes fell on her lips, I wanted her to be mine.
Alpha Nicholas's Little Mate
What? No—wait… oh Moon Goddess, no.
Please tell me you're joking, Lex.
But she's not. I can feel her excitement bubbling under my skin, while all I feel is dread.
We turn the corner, and the scent hits me like a punch to the chest—cinnamon and something impossibly warm. My eyes scan the room until they land on him. Tall. Commanding. Beautiful.
And then, just as quickly… he sees me.
His expression twists.
"Fuck no."
He turns—and runs.
My mate sees me and runs.
Bonnie has spent her entire life being broken down and abused by the people closest to her including her very own twin sister. Alongside her best friend Lilly who also lives a life of hell, they plan to run away while attending the biggest ball of the year while it's being hosted by another pack, only things don't quite go to plan leaving both girls feeling lost and unsure about their futures.
Alpha Nicholas is 28, mateless, and has no plans to change that. It's his turn to host the annual Blue Moon Ball this year and the last thing he expects is to find his mate. What he expects even less is for his mate to be 10 years younger than him and how his body reacts to her. While he tries to refuse to acknowledge that he has met his mate his world is turned upside down after guards catch two she-wolves running through his lands.
Once they are brought to him he finds himself once again facing his mate and discovers that she's hiding secrets that will make him want to kill more than one person.
Can he overcome his feelings towards having a mate and one that is so much younger than him? Will his mate want him after already feeling the sting of his unofficial rejection? Can they both work on letting go of the past and moving forward together or will fate have different plans and keep them apart?
Omega Bound
Thane Knight is the alpha of the Midnight Pack of the La Plata Mountain Range, the largest wolf shifter pack in the world. He is an alpha by day and hunts the shifter trafficking ring with his group of mercenaries by night. His hunt for vengeance leads to one raid that changes his life.
Tropes:
Touch her and die/Slow burn romance/Fated Mates/Found family twist/Close circle betrayal/Cinnamon roll for only her/Traumatized heroine/Rare wolf/Hidden powers/Knotting/Nesting/Heats/Luna/Attempted assassination
The Human Among Wolves
My stomach twisted, but he wasn’t finished.
"You're just a pathetic little human," Zayn said, his words deliberate, each one hitting like a slap. "Spreading your legs for the first guy who bothers to notice you."
Heat rushed to my face, burning with humiliation. My chest ached — not from his words alone, but from the sick realization that I had trusted him. That I had let myself believe he was different.
I was so, so stupid.
——————————————————
When eigteen-year-old Aurora Wells moves to a sleepy town with her parents, the last thing she expects is to be enrolled in a secret academy for werewolves.
Moonbound Academy is no ordinary school. It's here young Lycans, Betas and Alphas train in shifting, elemental magic, and ancient pack laws. But Aurora? She's just...human. a mistake. The new receptionist forgot to check her species - and now she's surrounded by predators who sense she doesn't belong.
Determined to stay under the radar, Aurora plans to survive the year unnoticed. But when she catches the attention of Zayn, a brooding and infuriatingly powerful Lycan prince, her life gets a lot more complicated. Zayn already has a mate. He already has enemies. And he definitely doesn't want anything to do with a clueless human.
But secrets run deeper than bloodlines at Moonbound. as Aurora unravels the truth about the academy - and herself - she begins to question everything she thought she knew.
Including the reason she was brought here at all.
Enemies will rise. Loyalties will shift. And the girl with no place in their world...might be the key to saving it.
Accardi
“I thought you said you were done chasing me?” Gen mocked.
“I am done chasing you.”
Before she could formulate a witty remark, Matteo threw her down. She landed hard on her back atop his dining room table. She tried to sit up when she noticed what he was doing. His hands were working on his belt. It came free of his pants with a violent yank. She collapsed back on her elbows, her mouth gaping open at the display. His face was a mask of sheer determination, his eyes were a dark gold swimming with heat and desire. His hands wrapped around her thighs and pulled her to the edge of the table. He glided his fingers up her thighs and hooked several around the inside of her panties. His knuckles brushed her dripping sex.
“You’re soaking wet, Genevieve. Tell me, was it me that made you this way or him?” his voice told her to be careful with her answer. His knuckles slid down through her folds and she threw her head back as she moaned. “Weakness?”
“You…” she breathed.
Genevieve loses a bet she can’t afford to pay. In a compromise, she agrees to convince any man her opponent chooses to go home with her that night. What she doesn’t realize when her sister’s friend points out the brooding man sitting alone at the bar, is that man won’t be okay with just one night with her. No, Matteo Accardi, Don of one of the largest gangs in New York City doesn’t do one night stands. Not with her anyway.
A pack of their own
Game of Destiny
When Finlay finds her, she is living among humans. He is smitten by the stubborn wolf that refuse to acknowledge his existence. She may not be his mate, but he wants her to be a part of his pack, latent wolf or not.
Amie cant resist the Alpha that comes into her life and drags her back into pack life. Not only does she find herself happier than she has been in a long time, her wolf finally comes to her. Finlay isn't her mate, but he becomes her best friend. Together with the other top wolves in the pack, they work to create the best and strongest pack.
When it's time for the pack games, the event that decides the packs rank for the coming ten year, Amie needs to face her old pack. When she sees the man that rejected her for the first time in ten years, everything she thought she knew is turned around. Amie and Finlay need to adapt to the new reality and find a way forward for their pack. But will the curve ball split them apart?
Surrendering to Destiny
Graham MacTavish wasn't prepared to find his mate in the small town of Sterling that borders the Blackmoore Packlands. He certainly didn't expect her to be a rogue, half-breed who smelled of Alpha blood. With her multi-colored eyes, there was no stopping him from falling hard the moment their mate bond snapped into place. He would do anything to claim her, protect her and cherish her no matter the cost.
From vengeful ex-lovers, pack politics, species prejudice, hidden plots, magic, kidnapping, poisoning, rogue attacks, and a mountain of secrets including Catherine's true parentage there is no shortage of things trying to tear the two apart.
Despite the hardships, a burning desire and willingness to trust will help forge a strong bond between the two... but no bond is unbreakable. When the secrets kept close to heart are slowly revealed, will the two be able to weather the storm? Or will the gift bestowed upon Catherine by the moon goddess be too insurmountable to overcome?
Shattered Girl
“I’m sorry, sweetheart. Was that too much?” I could see the worry in his eyes as I took a deep breath.
“I just didn’t want you to see all my scars,” I whispered, feeling ashamed of my marked body.
Emmy Nichols is used to surviving. She survived her abusive father for years until he beat her so severely, she ended up in the hospital, and her father was finally arrested. Now, Emmy is thrown into a life she never expected. Now she has a mother
who doesn't want her, a politically motivated stepfather with ties to the Irish mob, four older stepbrothers, and their best friend who swear to love and protect her. Then, one night, everything shatters, and Emmy feels her only option is to run.
When her stepbrothers and their best friend finally find her, will they pick up the pieces and convince Emmy that they will keep her safe and their love will hold them together?
The Lycan Prince’s Puppy
“Soon enough, you’ll be begging for me. And when you do—I’ll use you as I see fit, and then I’ll reject you.”
—
When Violet Hastings begins her freshman year at Starlight Shifters Academy, she only wants two things—honor her mother’s legacy by becoming a skilled healer for her pack and get through the academy without anyone calling her a freak for her strange eye condition.
Things take a dramatic turn when she discovers that Kylan, the arrogant heir to the Lycan throne who has made her life miserable from the moment they met, is her mate.
Kylan, known for his cold personality and cruel ways, is far from thrilled. He refuses to accept Violet as his mate, yet he doesn’t want to reject her either. Instead, he sees her as his puppy, and is determined to make her life even more of a living hell.
As if dealing with Kylan’s torment isn’t enough, Violet begins to uncover secrets about her past that change everything she thought she knew. Where does she truly come from? What is the secret behind her eyes? And has her whole life been a lie?
Oops, Wrong Girl to Bully
My back hit the desk. Pain exploded through my skull.
"Girls like you don't get to dream about guys like Kai." Bella's breath was hot on my face. "You don't get to write pathetic love letters."
She shoved me again. Harder.
"Maybe if you weren't such a desperate little—"
I fell. My head cracked against the corner.
Warmth trickled down my neck. Blood.
Their laughter turned to gasps.
The door slammed.
I tried to stand. Couldn't. The room was spinning, fading to black.
Someone... please...
Angelina, the most powerful Alpha who conquered forty-nine packs, dies in a yacht explosion—only to wake up as Aria Sterling, a fifteen-year-old Omega's daughter who just died from bullying.
The original Aria's life was a nightmare. Humiliated when golden boy Kai Matthews posted her love letter online, then shoved to death by his girlfriend Bella Morrison. But that's not all her family faces:
"You got until Monday," the tattooed gangster sneered at Aria's mother. "Ten grand cash. Or I'm taking collateral—your kids' organs fetch top dollar. That pretty daughter of yours? She could make us money another way too."
Now Angelina's lethal combat skills awaken in this fragile body. No more hiding. No more fear.
Armed with an Alpha's ruthlessness and a mysterious blood-red pendant, she'll dismantle everyone who hurt this family—one calculated move at a time.
Goddess Of The Underworld
When the veil between the Divine, the Living, and the Dead begins to crack, Envy is thrust beneath with a job she can’t drop: keep the worlds from bleeding together, shepherd the lost, and make ordinary into armour, breakfasts, bedtime, battle plans. Peace lasts exactly one lullaby. This is the story of an orphan pup who became a goddess by choosing her family; of four imperfect alphas learning how to be better. Steamy, fierce, and full of heart, Goddess of the Underworld is a reverse harem, found-family paranormal romance where love writes the rules and keeps three realms from falling apart.
