Your in your favourite club just dancing to the music and getting a drink (maybe) when you see a group of people following a boy and girl into a room and decide to follow cuz you see one of the boys in the group following with a knife and when you follow them you see

Isabel: finishes tying up the boy

Clary: leaning against the wall and watching

Jace: Pulls out a knife so demon… you trip and make a sound and Jace sees you You can see us?

Alec standing beside Jace