Remus John Lupin, the Defense Against The Dark Arts Professor, was eating in the Great Hall and speaking with his colleagues, it was his first day of work so the students didn't really know him but he seem friendly.

But then there is a window breaking of the Great Hall and a man is thrown in the Great Hall, his back hitting the wall and sending him on the ground in the middle, the students gasps And then around to see what it is, the window broke at the Gryffindor side.

And when all the professors all lift their head to look, they see a man on the ground, he had a cane on the ground because of the shock of being throw and had a long black jacket a black outfit, black short, dark red tie, loafers... Etc.