"Flipendo!" A hoarse voice rang out in the quiet Shrieking Shack.
Had anyone pulled back the thick curtains, they would have seen a fleeting flash of white light, along with the human look of astonishment on the face of a large black dog flying backward.
Just as Su Er had expected, Sirius Black's Animagus form had been hiding behind the sofa in the sitting room outside the door.
The instant Su Er pushed the door open and stepped into the sitting room, he lunged at him with his claws out.
But Su Er, who was prepared, immediately sent a spell his way.
Knocked flying by the spell before he could even see who had arrived, Sirius flipped himself back over.
Facing Su Er, he crouched low, his gaze as vicious as a wolf that had gone hungry for days, but he clearly had not expected a faceless monster to come out.
Calling Su Er a monster in his current state was entirely accurate.
What normal person had no nose, eyes, or mouth?
That moment of distraction was enough. His experience fighting (getting beaten by) Professor Snape countless times told Su Er that an enemy's lapse in attention was often the best moment to bring a battle to an end.
Su Er gave his wand a gentle flick.
Behind Black, a dust-covered box silently stretched and lengthened, slithering across the floor like a snake.
His long imprisonment seemed to have severely affected Black's judgment, but his keen animal senses still allowed him to scent a hint of danger.
But it was too late!
Under Su Er's control, the rope transfigured from the wooden box swiftly wound around Black just as he reacted and tried to dodge.
It climbed up the large dog's limbs, trussing him up tightly in the blink of