The man spoke. "Halloween. They shall decide on Halloween, and they will make their decision clear. If your servants return, than we shall know they have joined, my Lord."
"Very good. I see no reason why they will not join us." His eyes closed. "Enjoying the view, Potter?"
Harry Potter woke up trying to scream, but no sound came out. He shuddered at the cold that surrounded him. He looked down at himself. He was glowing blue-green, his entire body. He felt cold, yet not cold, everywhere. Everywhere except his scar, which was still burning. He glanced at his roommates.
Dean, Seamus, and Ron were still asleep, but Neville was staring at him in shock. "Blimey, Harry," he whispered. "How are you doing that?"
"Dunno," he whispered back. "Don't tell anyone though?" Seeing Neville's nod, he shut his eyes for a moment and tried to will it away. He felt like something had been sucked into his pores, like it was sitting right under his skin. The cold didn't disappear, but when he reopened his eyes, the glow had. The burning from his scar had subsided as well. He shut his eyes again and went back to sleep.
Neville stared at him for a few more seconds, then padded back over to the window he'd been looking through when the glow had distracted him. He looked up at the stars, took a deep breath, and let it out with a peaceful smile. Then he looked over towards the Ravenclaw dormitories and saw a figure in a window, a figure he recognized. He smiled again and waved. The figure waved back and left the window. Neville took another deep breath and went back to bed.
Luna Lovegood had been looking out the window in the Ravenclaw common room over towards Neville's window, waiting for him to appear like he did every night, when the green-blue glow had become visible. She stiffened in shock, but the glow disappeared quickly. Then she saw Neville appear in his window and saw him stare at the stars briefly before he waved at her. She smiled as he waved to her, and she waved back, then left the window and sat down on her bed, hard. The glow had to have been Harry Potter, and she was worried. The Frozen Soul was not a good sign. She sighed. There was nothing she could do about it except keep an eye on him. She went to bed.
In the Slytherin dungeons, a blue-green aura flared around Blaise Zabini, and she whimpered slightly before it disappeared into her and she relaxed again. No one saw it.
In the Ravenclaw boys' rooms, Alex Smith woke up screaming, glowing blue-green as bright as daylight, babbling about the cold and ice. It was a warm night. No one heard him, but he knew what had happened. His Frozen Soul had found others to surround. He shivered, then closed his eyes and sent out his senses. Zabini and Potter. He could save Zabini if she wanted to be saved. But this was going to help Potter. A Frozen Soul could guard him if he knew how to use it. He just needed to learn how not to let the bastards grind him down.