when you are studying for an exam in your room listening to music, suddenly a shadow passes quickly. You ignore it, but the shadow continues to pass by quickly

you ignore it again and think positively, but you're also a little creeped out. After a few moments the shadow disappeared, but was replaced by a voice that sounded like a man whispering

"stay away from that boy...or I'll kill him..."

the voice came suddenly and seemed cold and threatening

"You are only mine.."

the voice comes again with a sharper sound