"I'm surprised the squid's still alive after all these years." Caelum spoke as he stood a ways off beside Julia. He had not meant to meet her by the lake when he left the great hall. The noise and excitement around him just did not feel right. So he left his two friends gorging on their dinner and headed to the lake where the cold and the silence of the night was just right. He discovered Julia as a black blob of shadows when he went outside and his curiosity led him to identify it as the Ravenclaw.
He moved closer to her as he spoke, his hands hidden in the pockets of his robe and his breath leaving a puff of mist as he exhaled. He looked at her with a scrutinizing gaze but agreed with himself that she looked
acceptable under the moonlight. He could see how each strand of her hair glowed faintly in the dull light and how her skin seemed like porcelain in the darkness of night. But what he marveled at most was the Avada-green of her eyes that shone from the light that reflected off the lake's surface. Little did he know that a soft smile started to grow on his lips as he studied her.
He finally stood over her, blocking her view of the moon. "So, what brings you to sit by the lake all alo-" He paused when he felt a chill in the air. It was different from the comforting cool of the night's breeze. It felt ... dead. His eyes widened as he turned around, scanning the surrounding area. They did not move too far from the building, but any noise they'd make would be drowned out by the celebrations in the great hall.
He wrapped his fingers around the wand he kept in his pocket as the temperature kept dropping. The night seemed darker as something started to block out the moon and the stars completely vanished, leaving an even fainter light to illuminate the area. Then he heard it. A rattling breathing that seemed to want to taste the very air they breathed. The chill bit into his flesh now as he looked at the cloaked figure. It glided over the lake with a speed that did not seem possible with the rotting flesh it had. And with the blink of an eye, it was hovering over them.
"Expecto Patronum!" he yelled, a sliver of silver light streamed from the wand but faded into nothingness. He cursed under his breath as he took Julia's wrist and stared running back to the school but stopped when a second dementor blocked their path. He pulled her behind him and raised his wand at the soul-sucker. "We've never been able to conjure a patronus." he told her with a hopeless chuckle, "because we're good for nothing dark wizards." He turned his head to look at the first dementor slowly making its way towards them. "And they'll only be teaching the patronus charm near the end of the school year. So unless you know how to cast it, I suggest-"
He pushed her to the ground as soon as he saw the dementor in front of him raise its hood. He saw the scarred sockets of its eyes and the black hole it had for a mouth. And what happened next was all he could describe as all the light being sucked out of him, forcing him to recall the lowest points in his life.
(( Kinda long ... I got carried away ))