It seemed that all the people who had been dragged down by the Merpeople had not actually been taken, it was all just an elaborate illusion charm "You still think those Merpeople were imperiused then?"
"Of course not weren't you listening? There were no Merpeople but someone had made the fake ones look imperiused"
"That's your theory?"
"That's my theory, whoever it was had a keen attention to detail!"
They were met in the the entrance hall by a very rough looking professor, he had scars all over his face and his hair was raggedy looking. "All right in you go" he said gesturing to the doors of the great hall. They trooped in in a line and looked ahead, an old hat that was sitting on a stool began to sing a song
Over one thousand years ago
Four sorcerers got together
To create a school
To educate all
The young warlocks They could gather
Bold Gryffindor prized bravery
Wise Ravenclaw prized knowledge
Cold Slytherin prized ambition
Good Hufflepuff prized hard-work
And so with these thoughts in mind
They tried to divide
Their favorites from
All those that they could find
But how to choose after they had gone
And their bones lay in tombs?
"Friends!" cried Ravenclaw
"We need to be able to choose
Our favorites from the throng
That come here seeking education
Once we are dead and gone"
Gryffindor whipped me off his head
"A nessescary sacrifice" he said
The founders put some brains in me
So I could choose instead!
Now slip me snug about your ears,
I've never yet been wrong,
I'll have a look inside your mind
And tell where you belong!