For second-year college student Dan, calculus was supposed to be his worst nightmare. Then Ms. Vanessa Cruz walked in. Those glasses. That body. The way her voice drops when she says his name—low and deliberate, like a secret meant only for him. She's the substitute professor. Older. Experienced. Completely untouchable. And Dan can't stop imagining what's beneath that tailored blazer: the slow curve of her waist, the heat of her skin, the sounds she'd make if he dared to pull her close. When after-class tutoring begins, it should be innocent. It's anything but. Behind closed doors, Ms. Cruz reveals desires of her own—filthy, forbidden desires that shatter every rule she's supposed to uphold. Desires that could destroy them both. Yet every session only pulls them deeper: her breath warm against his neck, her fingers tracing paths that have nothing to do with calculus, her body pressing him against the desk in an empty classroom after the final bell. The college becomes their secret playground. Every stolen glance soaked in unspoken hunger. Every accidental touch that lingers a second too long. Every whisper thick with promise and the threat of being caught. Who would have thought his worst nightmare would script the most forbidden, pleasure-filled chapter of his life? A dangerously hot, forbidden professor-student romance for mature readers who like their stories dripping with heat and impossible to put down.