As you walk through the alley which the path you chose to walk on from work a 'shortcut', you notice some people talking. But you ignored them until you heard a gun shot. It wasn't loud it's like muffled soun of gun shot. It has a 'silencer'. You were scared that your body froze as you see a guy fell down and 'dead'!. You stumble backwards as you leave hurriedly without making a sound but-

"You think I wouldn't know that you've been listening like a rat" a cold voice behind you spoke