STEPS IN SIN: BROTHER'S HAND, SISTER'S GRIP by Cassandra Mile

A single, amused laugh shattered the quiet house and changed the rules forever. Mia only wanted a glass of water after her shower, padding barefoot down the stairs into the darkened living room. Instead, she froze at the edge of the hallway, her lips parting in surprise. Sprawled lazily on the sectional couch in the glow of the television was her arrogant, tattooed stepbrother, Jax, caught completely unawares in an intense, private moment of self-indulgence.

Mia didn't gasp. She didn't blush or run away. Instead, a bright, genuine laugh escaped her throat, cutting straight through the quiet room. Jax’s hand stilled instantly, his sharp eyes snapping to meet hers. But the embarrassment lasted only a heartbeat before a cocky smirk slid back onto his face. Refusing to cover himself, he issued a bold, silent challenge. Driven by a sudden spike of matching defiance and a buried curiosity that had simmered for months, Mia didn't retreat. She took a step forward.

What begins as a teasing, reckless dare on the living room sofa quickly ignites into a volatile, breathless obsession. Stranded together under the same roof, the standard boundaries of brother and sister completely dissolve. Every shared space becomes a hyper-charged minefield of hidden glances and stolen opportunities—from frantic, hushed encounters in a locked bathroom during a family gathering to late-night surrenders when the rest of the world is fast asleep.

Every touch is a dangerous gamble, a thrilling game of risk where the threat of being caught by their parents only sharpens their addictive desire. Steps in Sin is an intensely atmospheric, high-stakes contemporary romance that explores the razor-thin line where family ties warp into an absolute, unyielding physical dependency. As the heat between them builds to a fever pitch, Mia and Jax realize they are playing for keeps—and neither has any intention of stopping.