Nikita apparated back to the castle gates. She pulled on them and they were locked shut.

"Alohomora," Nikita whispered to her wand, which was pointing at the lock. The lock unlocked. She opened the gate and went inside. She locked the gate back up and went to the school.

On her way up to the castle steps, Nikita saw someone sitting on the steps. She knew immediately who it was.

"Hey Harry," she whispered to the person on the steps. The person looked in her direction.

"Who are you?" Harry asked. He thought he knew everyone in the school, but he now knew he was wrong.

"Don't worry about that right now," Nikita whispered, trying to walk as quietly as possible up the steps in her heals. "Professor Snape is probably out right now, and I don't want you to get into trouble. You better get back up to Gryffindor tower before anyone else sees you."

"Right. Would you mind telling me your name?" Harry asked.

"That's not important right now. If I see you in Hogsmeade tomorrow, I'll explain then." Nikita opened the castle doors.

"How will I find you?" Harry asked.

"I never realized you were so inquisitive, Harry. I'll call to you if I see you, alright?" Nikita smiled, closing the door behind Harry.

"Alright." Harry was glad it was dark in te castle, because he turned a bright shade of red.

"Good night, Harry." Nikita said.

"Good night, mysterious girl," Harry said and went upstairs.

Nikita went to Snape's office, went inside and went into her closet where she fell asleep almost immediately.

When Harry got back into the common room, he found Ron sitting by the fire.

"Hey Ron, you'll never believe what just happened to me," Harry said, in an excited whisper.

"What happened?" ron asked, yawning.

"I just saw this girl come into the school." Harry sat down on the couch next to Ron.

"Whoop-dee-doo. Harry saw a girl," Ron said sarcastically.

"Ron, I'm serious. I've never saw her the whole time we've been here at Hogwarts. And this is our fourth year here at Hogwarts." Harry was becoming excited about this girl and he wasn't about to let Ron try to talk him out of thinking this girl was part of his imagination.

"Maybe she's a transfer student," Ron suggested.

"A transfer student wouldn't know many of the teachers the day they got here. They also wouldn't know right away that the teachers roam the halls at night unless someone told them or they got caught," Harry stated.

"Maybe she's been in her house the whole time." Ron said

"We would have seen her sorted, Ron. Think about it. Has there been anyone sorted since the first years at the beginning of the year?" Harry was trying to really work Ron's brain.

"No. Maybe she was a ghost?" Harry knew Ron was tired, so he pretty much gave up.

"She wasn't a ghost. She was alive as you and I are. I'll prove it to you tomorrow at Hogsmeade." Harry stood up and went to go to their dorm room.

"How are you going to prove it to me when you don't even know her name? Or even barely remembering what she looks like?" Ron asked standing up aswell.

"She said that she would get my attention if she saw me," Harry said.

"How will she know it's you?" Ron asked.

"Ron, if she can reconize me from a good 10 to 15 yards from the castle steps when I'm sitting at the top on a dark night, I'm sure she can find me at Hogsmeade," Harry said confidently.

"Alright, but I still don't believe you. I won't believe you until I see this girl for myself," ron said. They then went up the stairwell, into the dorm, laid down in their for posters and went to sleep.