"So...what brings you here?" Cassie said smiling.
"I think you ought to come to my ovice with me." Filch said grinning.
"I think I better pass on that." Cassie said quckly.
"You already have one detention, do not make it two."
"My father says not to go into dark offices with ugly caretakers."
"MALFOY!"
"I'm just being honest." Then Cassie thought of something. "What if I were to tell you that I know of six students who are out of bed?"
"You do?" Filch said eagerly. "I'd let you off detention. So do you?"
Cassie thought about it. She could land them all in detention, getting revenge...and being the target for their next hexes. "Er...no reason, just curious."
"You mean you don't know of anyone...?"
Cassie sighed. She could get herself out of detention. "No, I don't."