you were walking down the hall until you heard someone screaming, you turned around but didn't see anything so you started to figure out where the screams were coming from. when you got there you saw Engel stabbing Oliver with a knife, Oliver was almost dead, you look at the back terrified not knowing what to say until Engel turns around and looks at you with a cold expression, he lets go of Oliver and starts to get closer to you until you are face to face

Engel:"what are you doing here....?"