She was supposed to be a nobody. He was never supposed to feel anything. Caroline Monroe is just an eighteen-year-old girl trying to survive the weight of her mother’s debts, a crumbling home, and a world that has always been cruel to the poor. With beauty that draws dangerous attention and a body that tempts powerful men, she’s spent most of her life hiding her fire — until a mysterious letter lures her into the lion’s den of Easton’s most feared mafia heir. Reuben Moretti doesn’t believe in love. As the cold-blooded heir to the Moretti Empire, he’s trained to rule with power, control, and silence. His life is calculated, merciless — and completely off-limits to feelings. But everything changes the night Caroline walks into his club, innocence in her eyes and defiance in her voice. She’s not like the others. She doesn’t beg. She doesn’t flirt. And worst of all... she tempts him. She was meant to be just another pawn. But somehow, she becomes his obsession. What starts as a dangerous agreement — her loyalty for his protection — soon spirals into something neither of them can control. She enters his world of blood, betrayal, and brutal power, and he finds himself craving her in ways that shatter his rules. But when enemies close in and past secrets resurface, Caroline becomes more than a weakness — she becomes his war. In a world where one wrong move could mean death, can the Don protect the only girl who makes him feel alive… or will loving her cost them both everything? The Don’s Weakness is a sizzling, slow-burn mafia romance filled with tension, betrayal, dark secrets, and dangerously addictive passion. If you love possessive anti-heroes, fierce heroines, steamy chemistry, and heart-stopping twists — this is the story that will leave you breathless.