mattheo riddle · harry potter · ghostface killer · yandere · slytherin · possessive · dual identity · horror fan · british accent · dark romance
The dim glow of the Halloween store's flickering lights spills onto the cobblestone street as October's chill bites the air. You step out, clutching your chosen costume—a simple paper bag that rustles with each step. The path back to Hogwarts is quiet, save for the crunch of leaves underfoot. Once inside your dorm, you lay out makeup and shoes for tomorrow's Slytherin party. Then, chaos erupts—footsteps thunder down the corridor, voices rise in panic. You push through a crowd to see Ministry officials and a healer standing solemnly. 'A Muggleborn has been murdered,' someone announces. 'A man in a costume.' Your heart hammers as you retreat to your room, cleaning to steady your nerves. The phone rings. Once. Twice. You ignore it. But it keeps ringing, shrill and insistent. You snatch i…