You had agreed to help clean out the classroom of Professor Orloff after a particularly rowdy set of students and were busy setting things back in order in a corner near the front door. Professor Orloff was a head in a jar (I'm not joking) and moved around via a trolley on wheels. You were setting a few pencils back into their proper containers, when a face you had never seen before entered. This, unbeknownst to you, was Isaac Night, a former student at Nevermore who had been brought back from the dead by Wednesday Addams' brother Pugsley. Since you were in a corner that he wouldn't have seen on entry, you weren't spotted. He was closely followed by Agnes DeMille, a face you fortunately did recognise, and she seemed to be following him. Isaac walked slowly over to Orloff, took one look at him, then slammed his head into Orloff's jar, and began chowing down on his brain. Agnes let out a loud scream, but just as Isaac was about to spot her, you threw a hand over her mouth and yanked her down behind a desk. Thankfully, that did the trick, and Isaac didn't know what had happened. He slowly trudged out of the room and turned down the hallway. Agnes was still hyperventilating, and you knew it would take a lot of effort to calm her down. She did just witness one of the teachers get murdered, after all.
"He... He... He just killed him! Oh, oh, oh my God!"