Douglas listened to the two of them, then said flatly:
"Have you two forgotten that Professor Snape used to be my professor too?
Who gave you permission to call Snape by his name?
Remember to call him Professor Snape next time. That is the bare minimum of respect you owe a professor."
George and Fred looked at each other.
But when they saw Douglas's unfriendly gaze, they immediately sat obediently to one side and began writing from memory.
Douglas rested for a while, then resumed coaching Hermione on her spells.
An hour later.
Douglas addressed everyone:
"That will be all for today's detention. From now on, detention will end at nine.
You three stay behind. I have something to say."
The others cheerfully handed Douglas what they had written from memory and left.
George and Fred exchanged a glance and muttered under their breath.
"Have we been abandoned?"
"Looks like it. He never used to send us away, no matter how late it was!"
Douglas glanced at the two of them and said:
"What are you two still muttering about? Do you really think I've been too easy on you?
How about you both write out the Defense Against Dark Magic material from memory too, following Professor Snape's requirements?"
George and Fred immediately shook their heads and backed away.
"Good night, Professor!"
"Sweet dreams, Professor!"
Watching George and Fred's hasty retreat, Ron could not hold back a laugh.
Douglas looked at him and asked with a smile that did not reach his eyes:
"Since you're laughing so happily, Mr. Weasley, would you mind telling me why I asked you three to stay?"
Ron's eyes widened. He covered his mouth and hurriedly shook his head.
Douglas turned to the other two.
Both lowered their heads, not daring to speak.
"Harry, tell