Did Robert Ludlum Write Any Standalone Thriller Books?

Isabella Vale built herself into a weapon. Beautiful. Ruthless. Untouchable. After the cruelest betrayal in her youth shattered her world and her father's empire toppled, she weaponized the one thing powerful men could never resist — herself. One false identity. One corrupt Italian conglomerate. Just one carefully orchestrated seduction that brought the mighty Valenti family to its knees. Now she's back in New York, richer, colder, and sharper than ever. The next target is Damien Thorne — billionaire, casino king, and the most dangerous man in the city. One night in his penthouse was supposed to be the beginning of his downfall. Instead, he looked her dead in the eyes and called her by her real name. He had known all along. Now Isabella is caught between a man who plays darker games than she does, a past she buried in Milan that refuses to stay dead, and a five-year-old daughter who keeps asking about a father Isabella has fought hard to forget. She conquered one empire through seduction and lies. But Damien Thorne isn't the Valentis — and this time, Isabella isn't sure who is hunting whom. When the hunter becomes the hunted, which one survives? BEWARE AS THE STORY MIGHT END WITH A CLIFFHANGER THAT SETS YOU ON FIRE. **This is Book 1 of the "Lustful Deception Series"**

When billionaire tycoon Anton Rogers discovers that someone in his empire has stolen a prototype capable of rewriting global digital security, he hires Sabatine Stalker, a private investigator who works in the shadows and has an uncertain past. But the more Sabatine digs, the trail of deceit leads squarely into Anton's inner circle — and perhaps to Anton himself. Bound by duty but seduced by desire, the two men are forced to navigate a dangerous landscape of corporate intrigue, deception, and forbidden longing. When a shocking revelation incriminates Sabatine, both must decide to have faith in the other or let their guarded hearts destroy everything they've built. In a universe of silk and steel, only the truth can set them free — at the cost of their lives.

“If I could not escape in peace as the victim, then this time, I would be the executioner. This time… I would kill him first.” Forced into a marriage of convenience to secure the Sinclair family’s billion-dollar inheritance, Julia spends ten years trapped with a cold and unfaithful husband. On the very day she is finally supposed to be free, she is betrayed, humiliated… and murdered by her own husband and his lover. But she wakes up on her wedding day. Protected by an amulet passed down through the women of her family, she relives the same cycle for the third time. In her previous attempts, running away and submitting did not prevent her death. Now, Julia decides to change the rules: instead of trying to survive, she will seek revenge. Colder and more dangerous, Julia begins manipulating the Sinclair power games while growing closer to Caleb, her husband’s best friend, the only man who ever treated her as a choice rather than an obligation. Scarred by deep trauma, Julia struggles to trust again, while Caleb slowly wins her over with respect, consistency, and loyalty. Amid love triangles, betrayals, family secrets, and premeditated murder, Julia plans to destroy Michael, frame his lover, and bring down the empire that imprisoned her. But the greatest choice will not be revenge. It will be allowing herself to love again.

The mission was simple: Protect her. The reality was dangerous: He loved her. ​Evander Sinclair is a man of steel and silence, an elite operative who never breaks protocol. But when he is assigned to guard Elena Montgomery, the lines of his duty begin to blur. She is a princess in a gilded cage, and he is the only one who sees her true soul. ​To give her the freedom she craves, Evander does the unthinkable—he takes her off the grid. But in the shadows of their brief disappearance, secrets from their past begin to surface. Between a ruthless ex-husband and a hidden truth that could shatter their worlds, Evander must decide: ​Is he her protector, or her downfall?

By day, he's Chicago's most powerful billionaire. By night, he's the city's most dangerous protector. Elena Moretti has spent years fighting for the forgotten—rescuing at-risk youth from the violence that claimed her brother's life. She doesn't trust wealth, power, or the men who wield them. So when enigmatic billionaire Dante Salvatore walks into her struggling community center with a check that could change everything, she knows there's a catch. Men like him don't save neighborhoods out of the goodness of their hearts. But Elena doesn't know Dante's secret: by night, he becomes The Sentinel, a masked vigilante dismantling the criminal empire that murdered his sister. As their worlds collide and attraction ignites between them, Elena begins investigating the vigilante whose methods both terrify and fascinate her—never suspecting the man she's falling for and the man she's hunting are one and the same. When a ruthless crime syndicate discovers The Sentinel's identity, Elena becomes the bait in a deadly trap. Dante must risk everything to save her, but when Elena uncovers the truth about the man behind the mask, she's forced to decide: Can she love someone who lives in shadows? And can a man who's spent years seeking vengeance ever truly step into the light? In a pulse-pounding tale of passion, danger, and redemption, two wounded souls discover that the most dangerous risk isn't fighting for justice—it's fighting for love.

When a secret agent falls in love with the very mob boss she's supposed to be taking down, there can only be deadly consequences...