Upton Sinclair Novels

Who said a parallel universe does not exist! He swore never to fall in love again. He's ruthless and cold. Lucas Quinn, is rich beyond anyone's wildest imagination and no one has ever been able to get close to him. All he cares about in life is perfection, which he always is looking for in novels and what not. But then an unruly, perfectly imperfect lady, Tasha Rowan, bumps into him, ruining a first edition book signed by the best-selling classic author in town. And she is the exact version of his dead girlfriend!

Olivia Sinclair has spent her life in the shadow of her golden sister, Isabella. Married to media mogul Liam Rockwell, she thought she had it all until Bella frames her for corporate sabotage on their fifth anniversary. Humiliated, cast out penniless, and blacklisted. Desperate for a way out, she takes a shocking gig: one night with an anonymous billionaire for $1 million. But when the blindfold comes off, she finds herself face-to-face with Theodore Sinclair—her ex’s uncle. Theo doesn’t care about the taboo, he wants her, and he’s not letting go. He marries her in a whirlwind public ceremony, installs her as CEO of Nova Media Group. Now, with power, revenge, and desire on her side, Olivia faces a choice: can she trust the man who should be family… or will his obsession destroy them all?

Handed over to the Billionaire Alpha as payment for her stepfather's debt Kyra Sinclair's life as she knew it was over. she was a clueless human thrust into the world of werewolves even worse when she finds out she's the Alpha's mate.

Content Warning: This book contains sexually explicit material and is intended for readers aged 18 and above. "I’m engaged to your sister. You can’t do this." His dark-green eyes bored into mine under the sheets, as he stroked my cheeks. "You’re not even into women, Liam. You know you’re not. You know you want this. You want me." And Liam couldn't deny it, He lived to burn for Jackson Maddox. ~ Liam Sinclair had always lived according to his father’s rules, polished, quiet, and hidden in the perfect image of a future CEO. Behind closed doors, he carried a secret that could destroy everything his father built. He was gay. But scandal had no place in the Sinclair legacy, and Liam made sure no one ever found out. That is, until the night everything changed. When his father arranges an engagement with Avery Maddox, a woman Liam barely knows, he unravels. A single night of rebellion leads him to a club, where a one-night stand with a seductive green-eyed stranger spirals into something far more complicated. The next morning, the stranger's identity is no longer a mystery. His name is Jackson Humin Maddox, the brother of his intending Fiancee. Now Liam is trapped between duty and desire, legacy and love. But Jackson doesn’t care about titles or contracts. Engaged or not, he wants Liam, and he is not letting go. This is a forbidden tango of chemistry, but Liam Sinclair has to choose, to either pretend his one time mistake was baseless, or to fall maddeningly in love with it.

I’m a moaning mess as Sebastian slams into me from behind. His hips hit me hard, and each deep thrust sends shockwaves through my body. Celestia was never a daughter to those who raised her; she was a transaction. At just eighteen, she was sold to the cold and powerful Sinclair family to settle her father’s mounting gambling debts, a heartless deal orchestrated by both her father and her stepmother. After escaping the initial humiliation and betrayal of her family cage, Celestia disappeared into the shadows. By twenty, she was living a life they would never imagine, working as a stripper at the gritty New Bay Bar. It was there, under the neon lights, that Sebastian Sinclair the ruthless billionaire playboy first set his eyes on her. He didn't realize she was the girl his family had already "bought" until the truth crashed down. Now, at twenty-one, the ultimate betrayal is set in stone. Celestia isn't marrying the man who stalks her dreams and haunts her touch. Instead, she is set to marry Sebastian’s elder brother, Marco Sinclair. Trapped between the brother she is legally bound to and the brother who is dangerously addicted to her, Celestia is playing a lethal game of revenge. What begins as a calculated move to destroy the Sinclairs from within quickly spirals into a dark obsession. Sebastian doesn't just break the rules for her; he rewrites them, and he has no intention of letting his brother keep what he considers his. Can she survive the price of being a Sinclair bride? Or will the fire between her and Sebastian burn the entire empire down?

I was a semi-retired actress, joining a divorce reality show with my billionaire husband. "I want a divorce." Facing the camera, I spoke calmly. Off-camera, Hector Sinclair frowned as he reviewed the scene with me. "You need to show more emotion when you say it. That’s what will get people talking, stir up discussion, and drive the views. "Otherwise, who’s going to believe you really want to divorce me? They’ll just think you’re acting again. “Use your head. I can’t guide you every step of the way." Yeah. To outsiders, I was nothing more than a pretty face—vain, shallow, and talentless. Meanwhile, he was a shrewd and cultured businessman, commanding a fortune worth billion. No one believed I would willingly give up the title of Mrs. Sinclair, not even Hector himself. However, he had no idea that this time, I meant it.

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?

Isabella, a self-proclaimed "goody two shoes", has always preferred the comfort of her room and romance novels to the unpredictability of real-life relationships. Convinced that men are crazy, she's resigned to living through her fantasy world. However, her mundane life is disrupted after a one-night stand with a drop-dead gorgeous playboy. But their secret tryst takes a complicated turn when Isabella discovers that her mystery lover is none other than her mother's fiancé's son. Dive into the world of Isabella as she navigates this messy web of love, family, and secrets.

Leda is a young Omega who lives her life in the novels, keeping her nature a secret that is carefully directed. Omegas having tremendous traits are highly priced, and yet, they have no rights, rather they are used as toys/slaves in the hands of the Alpha males who are much powerful and are seen as the government. Living a life in the slum was very tough but to survive, she pretends to be a Beta when she was given a contract at the Ceres House(A place of prostitution). Brumeh, the Alpha and a fierce cartel boss presume her to be a Beta on their meeting at the Ceres House. What happens when he eventually finds out about her secret...?

Aurora Sinclair has always wanted to live life on her own terms. She works hard, keeps her head high, and refuses to depend on anyone—even when times are tough. But her peaceful life is thrown into chaos when her father forces her into an unexpected marriage with Damien Sterling, a powerful billionaire hiding a dangerous secret. Damien never planned on getting married, especially not through blackmail. But with Thomas Sinclair threatening to expose him, Damien has no choice but to agree. What he doesn’t expect is to fall for Aurora’s fiery spirit and kind heart. When Aurora discovers the truth about their marriage, she feels betrayed by both her father and Damien. Hurt and angry, she pushes Damien away, but he’s determined to prove that his love for her is real. Caught between lies, secrets, and their growing feelings for each other, Aurora and Damien must decide if their love is worth fighting for—or if their differences will tear them apart forever.