Upton Sinclair Novels Novels & Stories

She was running from a man who owned her past. He was the man willing to fight for her future. Cassie Davidson doesn’t do love. At least not anymore. A talented cook with a locked heart, she lives by one rule: never get too close. But when George Sinclair, a soft-spoken billionaire with sharp eyes and a quiet fire, walks into her life, her rulebook starts to crack. George sees through her walls. He doesn’t ask questions but also never misses a detail. And when Cassie begins to let him in, she feels something she thought she lost forever... Safe. Just when she's beginning to breathe again, her nightmare returns. Xavier, the ex she barely escaped, is back. And this time, he's not playing fair. Caught between the ghosts of her past and a man willing to rewrite her future, Cassie must decide: will she keep surviving, or finally choose to live, fight? Hearts Unchained is a slow-burn billionaire romance pulsing with emotional tension, deep healing, and a love worth breaking chains for.

Bound by debt and haunted by a past she can't speak of, Annamaria is offered as a bride to Ares de Luca Sinclair, the ruthless head of the Sicilian mafia. He needs her secret; she craves revenge. Ares believes Annamaria holds the key to stopping a Russian mob invasion, but he doesn't know she blames him for her family's massacre and has vowed to get her revenge on him. As their lives intertwine, the lines between enemy and lover blur. But their fragile bond is threatened by a vengeful half-brother hungry for Ares's power, a scorned woman determined to reclaim her place by his side, and a forbidden love that refuses to be denied. When the truth is finally revealed, Annamaria finds herself a pawn in a deadly game. Kidnapped and tortured, she's forced to confront the secrets she's desperately trying to protect. Ares, consumed by betrayal, unleashes his fury, unaware he's playing right into the hands of his enemies. Will their love survive the lies, the betrayals, and the ever-present threat of the mafia underworld? Or will their dangerous dance end in heartbreak and ruin?

"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}

Three years ago, Aria Sinclair loved her billionaire husband Damien Cross with everything she had. In return, he destroyed her. Framed for infidelity by her own sister, Vanessa, Aria was publicly divorced, humiliated, and cast out with nothing, pregnant and alone. Now she’s back. Operating under the name Seraphina Kane, Aria has rebuilt herself as the CEO of a rival luxury empire. She’s powerful, untouchable, and unrecognizable. She returns to New York with one goal: to take everything from the people who took everything from her. But she didn’t plan on Damien falling desperately in love with her new identity. She didn’t plan on the old feelings resurfacing. And she definitely didn’t plan on him discovering that her two-year-old daughter has his eyes. As Vanessa schemes to expose Seraphina’s true identity, and Damien grows closer to a truth that could destroy them all, Aria must choose: complete her revenge, or risk her heart one more time for the man who shattered it.

Love leads to madness. Killian Benjamin Archer watched it happen to his father after his cherished wife's death. But when his elderly father arranges to marry flame-haired golddigger, Skye Sinclair, Ben, as he is known to his friends, is compelled to take drastic measures to stop the stunning beauty from taking advantage of the old business mogul. A marriage of mutual pleasure could be convenient, indeed … as long as unwanted feelings don't interfere. Desperation forced Skye to agree to marry an old madman. The arrangement will offer the protection she needs. Or so she believes until the billionaire's distractingly handsome son looks closer at the fine print of the contract… and takes his father's place ! Now, the easy, boring and, more importantly, secure union Skye planned, has been exchanged for one simmering with wicked temptation and potential heartbreak. Because as she begins to fall for her devilishly seductive husband, her dark secrets surface and threaten to ruin them both … unless Ben is willing to risk all and open his heart to love.

"You are mine!" Salvatore roared, taking a big stride toward Hazel's small figure, but a smirk was plastered on that figure's face. "I, Hazel Sinclair thereby reject you Maddox, or sorry should I say, Salvatore…." Her words were left hanging, as Salvatore tightened his fist stopping her from breathing. "I won't permit you to reject me, you are alive because I gave you the chance, so don't push your limit," Hazel finds herself in a tragic situation where her parents are killed, and she and her twin sister are enslaved by one of their rivals on the day that was to be one of her happy moments. Hazel lived all her life as a slave till she met the one who was the cause of her misfortune. But weirdly he wanted her heart, but Hazel was bent on destroying him. He allows her to train so hard so she can defeat him, why? Because she is his fated mate. He wanted her but she loathed him.

The day I decided to donate my body to science, my family gathered around my adopted sister, Hailey, celebrating her acceptance into a cutting-edge experimental treatment program. The one with brain cancer was supposed to be me. But Hailey used my husband Zane's position at the hospital to swap her healthy medical records with my terminal diagnosis, stealing the one chance I had to survive. And the worst part? Everyone cheered her on. The pain became too much. I fought to stay present, only to overhear the nurses whispering, "It's a good thing Dr. Zane secured that spot for Hailey. They said she only had three days left." So, in the last 72 hours of my life, I quietly let go of everything. When I gave Hailey the original manuscripts of my novels I had poured my heart and soul into, my father and brother gave me a satisfied smile. When Zane decided to grant Hailey her dying wish by marrying her, he handed me the divorce papers. I signed without a moment's hesitation. He sighed and praised me for finally being "so reasonable." And when I was the one who coaxed our daughter, Olivia, into calling Hailey "Mommy," Olivia gushed that her new mom was the best. "Don't worry," Zane soothed. "We're just keeping it safe for now. Once she's gone, it'll all come back to you." I gave Hailey everything I had, just like they wanted. So why, when they find out this was all Hailey's vicious lie, do they come crying, saying I'm the one they wanted all along?

She is the girl he’ll never forget and he is the boy she can’t remember. Eros Adler’s job is simple: kidnap the girl, bring her to the dark forest, kill her, and hide the body where no one, especially her father who is the Night Walkers Alpha, will be able to find. The reality is far different than his expectation. Getting romantically involved is not in his plans - especially not with the person you are supposed to kill. But there’s just something irresistibly powerful about Val, even if her fiery, no-nonsense personality annoys him to no end. Leave it to Eros to kidnap the Alpha’s daughter; leave it to Val to capture the criminal’s heart. ＊＊＊＊＊＊＊＊＊ Valeriya Sinclair is blessed with a second chance: she is rebirthed and comes back to the age of twenty. This time she will protect her family and make her enemies pay their debts. But first thing first, she must convince her kidnapper to help her. But can she resist the explosive attraction between them long enough to make this union actually work? ＊＊＊＊＊＊＊＊＊ Book 3 of The A.R. Were World Series. Can be read as a stand-alone.

Seven years after leaving the country, I returned home with my five-year-old son. The moment my stepsister saw me, her eyes filled with contempt. "I always wondered what you were doing overseas. Turns out you were out there sleeping your way around for money. And now you've come back with a kid in tow." I was about to fire back when my stepmother cut in, looking smug. "You came back because you heard Victoria is about to marry the CEO of Sinclair Group, didn't you? Hah! You used to throw yourself at Elliot. It's a good thing Elliot wasn't blind and knew to choose Victoria instead." She let out a cold snort. "Take your bastard child and get out of my sight. Otherwise, you'll be sorry if you're still here when the Sinclairs arrive." I glanced at the five-year-old boy holding my hand and smiled. Elliot? Please. The guy would be grovelling on his knees the second he met my son.

Ava Sinclair died pregnant, betrayed by the two people she trusted most, her husband and her best friend. When she opens her eyes again, she’s twenty six again and back in the moment before her life fell apart. This time, she refuses to walk into the same trap. She rejects marrying her boyfriend Luca and opted for an arranged marriage with Damien Moretti Ava knows Damien isn’t marrying her for love. He’s marrying her because it’s his duty , He warns her not to expect affection from him but she told him she'll make him fall in love with her. He laughed it off. But the more he pushes her away, the more Damien starts to crumble, revealing a possessive, caring man. “You don’t have to love me,” Ava said to him softly, but I'll love you. And when the truth behind her past life’s betrayal resurfaces, Ava realizes fate isn’t done with her yet… and neither is her marriage to Damien Moretti.