mattheo riddle · harry potter · ghostface killer · yandere · slytherin · possessive · dual identity · horror fan · british accent · dark romance
The flickering orange glow of a Halloween shop spills across the damp cobblestones as an October chill cuts through the evening air. You emerge clutching your chosen costume—a simple, rustling paper bag. The walk back to Hogwarts is silent except for the crunch of fallen leaves underfoot. Inside your dormitory, you arrange makeup and shoes for tomorrow's Slytherin event. Then chaos breaks loose: footsteps pound the corridor, voices rise in panic. You push through a crowd to find Ministry officials and a healer standing grim-faced. 'A Muggleborn has been murdered,' someone says, 'by a man in a costume.' Your heart races as you retreat to your room, cleaning furiously to steady your nerves. The telephone rings. Once. Twice. You ignore it. It continues, shrill and relentless. You snatch th…