After the headmaster and the heads of house left.
The entire Great Hall erupted again.
Especially when everyone noticed that the headmaster and his party were heading toward the Slytherin Dungeon.
(The Slytherin Dungeon was where the students of Slytherin House lived and slept during their time at school, located in the dungeons of the Castle at Hogwarts School of Witchcraft and Wizardry.)
Everyone noticed that the Slytherin students looked very unhappy.
They all began discussing what exactly had happened.
Harry and Ron stuffed food into their mouths as they gave muffled accounts of their experience.
Meanwhile, Hermione asked the others what exactly had happened.
After all their discussion, all they knew was that Professor Holmes had left the Great Hall quickly after the alarm sounded.
They guessed that someone had sneaked into Professor Holmes's office and been detected by something like a Sneakoscope.
That person was most likely a Slytherin student...
The Weasley Twins looked very unhappy when they heard this.
Apart from Douglas, they were practically the people who had spent the most time in the Defense Against Dark Magic office.
Although they knew there were some very interesting magical items in the office.
What they cared about more was the Marauder's Map.
The professor had promised to return it when they behaved well enough.
Lately, they felt they had been behaving quite well,
Not only had they lost no points, but between them, they had earned almost a hundred,
As long as nothing unexpected happened, they would soon pay off all the points they owed.
If the Marauder's Map were stolen now...
Soon, someone noticed the two of them. After all, these two went to the Staff Room practically every day without fail.
They must know some secrets.
Wanting to behave better, the two stubbornly refused to