Catherine walked through into the hallway, towards the library where Scorpius had told her to meet him. She saw Louis leaning on the wall with a rather long-legged girl that had long brown hair that was braided to the side. Louis spotted Catherine and smiled

"Hey Catherine!" he exclaimed before walking over followed by the girl

"Oh Louis, hi" Catherine greeted trying to act like she didn't see him

"This is Sky Crossman" he said glancing at the girl, Catherine's eyes were immediately drawn to Sky's red and orange tie. She was a Griffindor, sure Catherine didn't have anything against Griffindors unlike her mother, father and brother but something made her immediately hate Sky.

"I'm Louis's Girlfriend" Sky said smiling happily, Catherine narrowed her eyes

"Ah... that's cool, I would stay but I told Scorpius I would meet him in the library so, Bye" Catherine said before walking away quickly. Catherine shook her head "Of course the French boy has a girlfriend, but why do I care" she muttered under her breath as she dodged students as they walked through the crowds of students. She walked through the doors of the library and looked for Scorpius. There were many student's in the library, most were studying but there was the odd group of people sitting on the tables gossiping rather loudly.

She reached the back of the library and saw Scorpius sitting on the desk,

"Scorpius?" she said approaching him. Scorpius glanced at Catherine

"I was beginning to think you weren't coming" he said

"What did you want to talk to me about?" Catherine questioned sitting next to him. Scorpius seemed to nervously gulp

"I swore to mother and father I wouldn't tell you but I can't hold it in any longer. You're not my sister, I am the only child of the Malfoy's. You on the other hand are Tom Marvolo Riddle's granddaughter" Scorpius said quietly just so Catherine could hear him. Catherine stared at Scorpius with disbelief

"What, no I can't be. Could I?" Catherine said

"You are, you were left on the doorstep of our house. We took you in and told each other never to tell you who you really were" Scorpius said

"So who am I really?" Catherine asked

"Catherine Mary Riddle, daughter of Daisy Riddle and Jason Riddle. You are the Granddaughter of the Dark lord" Scorpius said. Catherine could feel tears run down her face, she fell into Scorpius arms

"Scorpius you've been like a brother to me for 11 years, but it's all been a lie!" she said crying. Scorpius held Catherine tightly as she cried, before seeing Albus watching from behind a bookshelf.

Scorpius narrowed his eyes at Albus before getting up and chasing after Albus who was sprinting away. Catherine walked out a few minutes later and went to the girls bathroom and noticed no one was there. She looked around

"Hello?" she asked looking around, suddenly a ghost girl wearing Hogwarts robes floated down to Catherine. She had her dark hair tied into piggy tails and she had thin round glasses on

"Who are you!" the ghost girl snapped, Catherine jumped with surprise and turned to face the ghost girl who was standing right in front of her.

"I-I'm Catherine, who are you?" Catherine murmured fearfully

"I'm Moaning Mertle!" the ghost girl hissed.

Catherine backed away slightly but the ghost girl just walked towards her until Catherine hit the wall and the ghost girl was basically pinning Catherine to the wall. Catherine looked at Moaning Mertle with fear, the girl was around her age and was rather scary. But a question lingered in Catherine's head

"How did you die?" Catherine said without really thinking, Moaning Mertle floated away slightly to the sinks.

"I don't know, it was so many years ago" Moaning Mertle answered

"How long ago?" Catherine asked

"What year is it now?" Moaning Mertle asked tilting her head

"2018" Catherine answered, Mertle shrugged

"I guess about 60 years..." she murmured, Catherine narrowed her eyes while she thought

"Was Tom Marvolo Riddle around at the time?" Catherine asked,

"Yes, he was. The Sly, Slytherin brat" Mertle hissed sitting down on the ground

"What?" Catherine questioned approaching Mertle

"Tom Riddle, was quiet and a silent planner. He was the cruellest to me, he used to push me into walls and do spells that had horrible effects... It really sucked" Mertle explained

"How old was he when he did this to you?" Catherine asked

"STOP ASKING QUESTIONS!" Mertle yelled.