Captived by My Demon Stepbrother

When Mom married into the Blake family, Ethan, my stepbrother, became my greatest nightmare. His rules were domineering: no dating, no contact with males. Without his permission, I couldn't even leave his sight.
That day when I secretly slipped out, he cornered me in the living room, gripping my throat. "Try it again, and I won't just lock you on the couch, but in my bed."
I smirked contemptuously... until his hand slid under my skirt. "You think this is about revenge against your mother?" his voice deepened. "I've wanted to do this since the moment you walked in."
"Are you crazy?" I panted, my legs growing weak. "We're siblings!"
"Siblings?" He laughed darkly, his hand gripping my chin, forcing me to meet his eyes. "You think I care about that?"
Four years later, he stood before me with custody papers. He stared at the boy beside me - those eyes just like his own. "Sign, or I take him tomorrow." But when our child reached for him, this monster shrank back.
Now he whispered dangerous new conditions in my ear: "Marry me. Let him have our family name. And maybe this time, I'll spare your pretty thighs from scars..."