Upton Sinclair Novels

“Tell me, Thalia, does it hurt to be cast aside, thrown to the wolves?” I laughed harshly, “Is this what it feels like? To be nothing? To be forgotten?” “Ronan… please…” Her voice was so soft, so broken that it almost made me feel sympathy for her, but in an instant, I crushed that emotion. I couldn’t allow her tears to sway me. “Don’t you dare cry,” I spat. “Save your pathetic, fake tears. They mean nothing to me now, just like you should have meant nothing to me then.” Thalia Sinclair was once a respected Luna, but her life fell apart when her mate rejected her and sold her to the cruel Rogue Sovereign. Forced to toughen up, she learned to survive alone, with no one to trust. Ronan Kane has waited for the moment to make Thalia pay for the hurt she caused him. But when their paths cross again, anger and pain mix with something neither of them can deny. Can they overcome their broken pasts, or will their scars keep them apart forever? Betrayal cuts deep. Vengeance burns hotter. Love is the deadliest weapon of all.

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?

Isabella Rossi thought the worst thing in the world was losing her boyfriend to her best friend. She was wrong. Her best friend handed her to another man. Drugged. Betrayed. Claimed. She woke up under the cold, ruthless body of a stranger—only he wasn’t a stranger at all. Vincent Sinclair: her company’s new CEO, heir to one of Manhattan’s most elite dynasties… and her ex-best friend Chloe’s older brother. He doesn’t remember her face. He's nothing but an entitled playboy...or so she believes He thought she was just another social climber. She thought she’d only lost her innocence. Until two pink lines shattered everything. She tries to keep her distance. He decides she belongs to him. Now she's caught between a man who devours her with a glance, a child she never planned for, and a betrayal that still bleeds. And Vincent? He’s made one thing terrifyingly clear: He doesn’t share.

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.

"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}

Following the success of her two novels, Cela receives an offer for the TV adaptation of her stories but a third story has to be written soon to complete a three-story special. She is not in to the project until she rediscovers the paper bearing the address of the meeting place of her supposed first date with Nate. Now that her mother is no longer around to interfere, she becomes inspired to reunite with him after many years and hopefully write the third novel based on their new story. Unfortunately, he is now about to get married in two months. Disappointed with the turn of events, she decides not to meet him again. She visits their old meeting place and finds it a good place to write but unexpectedly meets him there. They agree not to talk to each other if they meet there again but fate leads them to meet again under different circumstances leaving them no choice but to speak to each other. Suddenly, Nate’s fiancée starts acting weird and suggests that he spend the weekend with Cela while she is away. Although it confuses him, he figures that it is her way of helping him get closure. The two spend one Sunday reminiscing the past expecting a closure in the end but the wonderful moment they share this time only makes it harder to achieve that closure so Cela has to put a stop to it saying, “Please don't think even for a second that there is still something left or something new to explore after everything that happened or did not happen. This is not a novel. This is reality. We don't get sequels or spin-offs in real life. We just continue. We move forward and that's how we get to the ending."

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?

After being secretly married for three years, Holly Sinclair's husband suddenly asks for a divorce. She hides the pain and leaves after taking the money he gives her. From that day on, her life goes uphill. She restores precious masterpieces and determines their authenticity. The world of vintage pieces is her oyster.After the divorce, a certain ex-husband is filled with regret when he sees Holly on TV, showing off her skills. He turns into her loyal fan and chases her around the world. "I'll give you my heart and soul, babe. Please, come back to me."Holly says, "Sorry, but I'm busy. I have too much to do!"Later, she meets the man who saved her when she was younger. On the day of her wedding, she receives some horrible news. She leaves her groom at the altar and mourns her ex-husband's supposed death. Pain is all she feels.Then, her ex-husband suddenly shows up, wounded but alive, and gets on one knee before her while holding out a diamond ring. "Let's remarry, babe!"

A scarred wife. A hidden legacy. A love too costly to deny. To the world, Adrian Voss is untouchable—cold, ruthless, and devastatingly powerful. The billionaire CEO of Voss Enterprises has everything… except the one thing he hides behind locked doors. His wife. Scarred and scorned, Ava Voss lives in the shadows of her marriage. To society, she doesn’t exist. To Adrian’s glamorous mistress, Selene Monroe, she’s nothing but an obstacle waiting to be erased. And to Adrian’s cruel family, she’s a curse. But Ava carries two secrets no one expects— One that ties Adrian’s fragile empire to her name. And another growing inside her that will change everything. When betrayal rips her from Adrian’s house, Ava vanishes into silence—until the night she returns. Stronger. Radiant. Revealed as the hidden heiress of Sinclair Global, the very empire Adrian is desperate to claim. Now the man who once denied her will have to fight for her. For her heart. For their child. And for the love he was too proud to show. She was meant to be his shame. Instead, she will be his reckoning.

Aria’s life is not a walk in the park, gasping for a breath of fresh air under the weight of her adoptive father’s gambling debts. She is betrayed by the only other person she can trust, her fiance.  Everything takes a different turn one night when she falls into the arms of Alexander Sinclair, a powerful CEO with issues of his own.  Aria is mistaken for Alexander’s long lost childhood fiancée by his sick grandmother. Aria is drawn into a contract marriage with promises of freedom from her ex fiance and financial rescue from debts incurred by her adoptive father.  Finding their way around the ruse they’ve begun, their mutual attraction grows deeper and Alexander begins to find out things about a past long forgotten, a past that might prove that Aria has always been connected to him. But danger isn’t far away as Ethan, Aria’s obsessive ex fiancé threatens to destroy their still blossoming bond and expose their carefully crafted arrangement.  This world is one of lost memories, unspoken desires and danger on every side. Aria and Alexander must make a decision, is their relationship just a contract or is it becoming something… truly genuine?