Upton Sinclair Novels

"You make it sound like I did something wrong?" Niklaus says with a sly smile before stepping back to avoid the punch I swing at him. His hand grabs my wrist tightly before he spins and presses me back on his desk, with my upper body facing him. His hips press against my parted legs. "Really...Luci, I missed you like crazy. How can you say such harsh things to me?" He says with a pout. Wait…wait, what is that pressing against me? "You crazy b*stard." I all but scream the words, but the manic excitement in his eyes doesn't waver as he forces his hips against me. Eight years ago, novice recruit Lucien Sinclair had the perfect partner and brother-in-law anyone could ask for; everything vanished in the blink of an eye when the 'perfect' man, Niklaus Heinrich, turned out to be the perfect devil, an arms dealer masquerading as the perfect CEO to the largest company in Ferndale. What happens when the two are forced to work together again? {This is a stand-alone book}

Sophia Quinn was deceived into marrying Victor Sinclair, only to find out that he was in a coma. Despite the shocking truth, she remained by his side for three years, caring for him and fulfilling her role as his wife under difficult circumstances. When Victor finally woke up, he only had eyes for Isabella Quinn, Sophia's half-sister. Overnight, Sophia became the villain in their story, forced to endure humiliation and prove her worth to a man who refused to see her sacrifices. Her heartbreak deepened when she told Victor she was pregnant, only for him to coldly reply, "You're not worthy to bear my child." Sophia tried everything to save her marriage, but when Victor abandoned her during a fire, leaving her to die despite her pregnancy, she completely gave up on him. Broken and ready to give up on life, she was rescued by Caleb Foster—a billionaire who treated her with the love and care she had always longed for. As Caleb showered her with affection and gave her a new lease on life, Sophia began to experience what true love felt like. But when Victor returns, begging for forgiveness and promising to be a good husband and father, will Sophia be willing to give him another chance? Or will she choose the man who proved himself to be her true knight in shining armor?

When Vera Sinclair’s longtime boyfriend dumps her for the heiress she unknowingly replaced, she’s devastated but not broken. For years, she played the role of the perfect girlfriend, filling in the gaps while he pined for another woman. But now? She’s done being second best. Just when she thinks she’s free, a powerful billionaire, Asher Donovan enters the picture with an intriguing proposition. He needs a fiancée to silence his family’s constant matchmaking, and Vera, with her newfound indifference to love, is the perfect candidate. But Asher isn’t just any billionaire, he’s her ex’s former business rival, the one man who can make her ex regret ever letting her go. As Vera steps into the world of high society on her own terms, she realizes that being a “substitute” was never her destiny. She was meant to be someone’s first choice. And this time, love might just come with the sweetest revenge.

She was always the good girl. Until heartbreak made her reckless. Elena Sinclair thought marriage meant forever. But five years in, her “forever” has become a gilded cage of pain and betrayal. She’s the wife who couldn’t give him a child. The barren disappointment. And for that, her husband offered her a cruel compromise… an open marriage. One that gave him the right to find someone who could carry his heir. The next day, he brought a pregnant woman home. The same woman who was first introduced as his cousin. The humiliation doesn’t end there, his mother lashes out… hurling insults and even fists, while her husband turns a blind eye. Not once has he defended her. Not once has he shown her love. She’s nothing more than a placeholder… a name on a marriage certificate. The cruelest part? She loved him. She loved him long before the vows, long before the lies… so deeply it blinded her to who he really was. Now, to make him jealous, she turns to the one man she should never touch: Jaxx Moretti, her husband’s younger brother. The dangerous one. The black sheep of the Sinclair family. The man who once made her high school years hell… and now has every reason to destroy her husband's legacy. What starts as a twisted game soon ignites into something raw, addictive, and completely forbidden. But Jaxx isn’t just her escape. He’s everything her husband isn’t. Because the deeper she sinks into Jaxx's bed… The harder it becomes to crawl back out. Content Warning: This book contains mature themes intended for adult audiences (18+), including explicit sexual content, toxic relationships, manipulation, and emotional trauma. Reader discretion is strongly advised.

Seduced by the Billionaire is a sizzling collection of standalone short novels where powerful billionaires meet fierce, unexpected women who turn their worlds upside down. From scandalous contracts to dangerous secrets, each story dives into a world of passion, power, and emotional intensity—where every deal comes with a price, and falling in love is the ultimate risk.

When Isabelle's mother, an ambitious socialite, marries for the fourth time, she introduces Isabelle to her new stepfamily. To Isabelle's horror, her new stepbrother is none other than Logan Sinclair—the very boy who tormented her during high school. Seeing him again rekindles all the old fears and resentments. To make matters worse, Isabelle is soon hired as Logan's secretary at Sinclair Enterprises, the megacorporation run by Logan’s father. Isabelle braces for the worst, expecting her nightmare to continue. But instead of cruelty, Logan is calm, professional, and oddly protective of her. Isabelle is torn. The wounds of her past run deep, and the humiliation she endured at his hands isn’t easily forgotten. Can people truly change? Or is Logan just playing a long game, trying to manipulate her emotions once again?

Bellatrix Sinclair, an 18-year-old weapons prodigy that despises werewolves for destroying her family has been secretly planning to join the human rebellion. However, she is forced into the Mate Selection Process and matched with Lazarus De Loughrey, the ruthless Werewolf King obsessed with claiming her. He shouldn't want her and she should hate him but they cannot resist each other. It's a twisted connection, entirely physical because all I am is his slave. My heart should belong to my best friend Emmett, a human. Atleast the guilt of betrayal wouldn't be eating away at my insides. ___________________________ “Yes please.” She begs. “Then fucking let me in.” I growled, this fury exploding with vengeance. I wanted to destroy her pussy. It was maddening, it was sickening, it was barbaric. But I never claimed to be saint. “Here that baby, that’s the sound of your greedy pussy sucking on my cock. Give me more, drench me.” “Lazarus.” She moans painfully, “Please let me come.” I’m doused in gasoline and set alight, sweat coats my skin as I pound into her faster and harder. I’m definitely hurting her, “Wanna come?” I rasped, “Not until I say so.” Pressing my lips onto hers, pushing my tongue into her mouth until I feel the sweetness of hers. The kiss is sloppy and filthy. She cries as I drive my cock into her, the intensity too much to handle, sweet tears sliding onto her cheeks. “Fuck yes.” I smile sadistically, licking her tears. “Cry for me Ma Cherie.” “Please, please let me come My King.” She pleads. “Say it again.” Lightening shooting down my spine as she begged, “My King, please let me come. I’ll be good.” I chuckled, “Try your luck to kill me Ma Cherie, I dare you.”

"I, Fred Upton, reject you, Sophia Rush" "I, Sophia Rush, accept your rejection, Fred Upton" What's harder? Loving a man who doesn't belong to you or watching the one who does love someone else? -------- Sophia has always been at fate’s mercy. She fell in love with Kaden but when his mate arrived, she was cast aside. Heartbroken, she ran away without so much as a goodbye. Ten years later, she meets her fated mated but he already has a family. Desperate to forget her cursed fate, she seeks solace in a club, hoping to forget everything, even if it's only for a night, in the arms of a stranger. But when a ruthless Alpha sets his sights on her, refusing to take no for an answer, she has no choice but to run. Fate is cruel enough to thrust her back into the arms of the man she ran away from years ago. The one who once shattered her heart. But this time, he’s not just cold. He’s out for revenge. Blaming her for the tragedy that followed her departure, he’s determined to make her suffer. Yet when the very enemy he’s hunted for years sets his sights on Sophia, Kaden is forced to protect her. Because no matter how much he resents her, one truth remains. He’s never been able to forget her But love is fragile in the face of a relentless enemy. And when Kaden must choose between Sophia and a hidden kingdom he never knew existed, will he follow his heart or his destiny?

She offered him her heart, her trust, her everything and her soul only to face betrayal, heartbreak, and being discarded as if she meant nothing to him. Eleanor Sinclair was once a delicate, vibrant, quiet woman who loved intensely and wholeheartedly, but love caused her immense pain and regret. Married to the ruthless, wicked and influential Damian Blackwood, she suffered through his cold indifference, harsh words, and the stifling loneliness of an absent and void love. When he wrongfully accused her of infidelity and cast her away, she lost everything: her dignity, her aspirations,her goals, her life maybe and the child she was carrying. Left for dead, Eleanor faded from existence, but she didn’t die. Instead, she emerged from her suffering, forged in the fires of pain and revenge, becoming the very nightmare of the underworld. No longer the timid, weak woman pleading for affection, she returns years later, powerful and driven by a singular mission: to destroy the man who ruined her life, to kill him and burn him if possible. However, Damian Blackwood is unlike any other. Ruthless, strategic, and more dangerous than before, he never expected the woman he once threw away would come back stronger, more lethal and destructive, and beyond his reach. The moment he lays eyes on her again, he recognizes his error. She was never the weak one he was. Now, he’s determined to pursue her, plead, and break every rule to reclaim her for good. But Eleanor has no heart left to offer. Not while the fire of revenge still courses through her veins. He feels regret. She seeks vengeance. Let the pursuit begin…

As Cain Knight's mate, I watched him lead Elias Sinclair, his childhood sweetheart, onto the stage at the Black Moon Pack's annual charity gala. "In recognition of Miss Sinclair's outstanding contributions to our community," Cain announced, his voice a glacial shard as his eyes found me, "I have decided to grant her the title of this year's 'Charity Ambassador.'" An honor that had, for years, been bestowed upon the Luna by her Alpha. He shattered tradition just to humiliate me. Under the pitying gazes of the entire pack, I did not cry. I did not question him. I simply straightened my spine, set down my champagne flute, and silently turned to leave. "Let her go," I heard Cain sneer behind me. "She won't last half the night. She'll come crawling back like a beaten dog, begging for my forgiveness." A wave of derisive laughter erupted behind me. "After all these years, Lupita still uses the same tired tricks to get Alpha Cain's attention!" "I bet she'll be on her knees, pleading for Alpha Cain's forgiveness before sunrise!" But they didn't know. The person waiting to spirit me away was already at the door. This time, I would vanish from this gilded cage forever.