"I received your owl Professor, why did you want to see me?"
"Come in Mr Potter."
Harry ventured into the office that he hadn't seen for over 20 years. It had hardly changed since Professor McGonagall had first called it hers 18 years ago. The portrait of Albus Dumbledore waved merrily at him over the headmistress' head, as did many of the other portraits. The painting of Phineas Nigellus said nothing for he saw Harry every day from his portrait at number 12. McGonagall, now being almost 80 years old, had barely changed also. Her previously black hair was now a shade similar to a silver sickle but otherwise she was the same, severe looking witch in the green robes.
She shook his hand, her thin lips stretching a few centimetres before setting back into her trademark deadpan expression. She gestured at the ornate seat on the other side of her desk. Harry sat down, looking at the computer that sat in front of her. It looked very out of place in an office full of whirring magical instruments. McGonagall followed his gaze.
"I don't like it much but the board bought it for me after several months of them insisting that I should get it. I still can't get my head around emailing, what is the point when you can send an owl or a patronus?" she explained.
Harry thought about offering to help her with emailing but he decided against it. She hasn't asked me to come here to help her with her computer he told himself.
"I have several reasons for asking you to come here today Mr Potter. I have reasons to believe that there has been some nastiness between your son Albus Severus and Scorpius Malfoy involving the website Facebook. There have been reports of putting nasty comments on each other's profiles and pictures, spreading rumours. However the most serious offense was making events, examples of which being 'The day I kill Scorpius Malfoy' and 'The day I use levicorpus on Potter'."
"I thought that it stopped when you called me in last year about it." Harry said angrily, remembering the shouted conversation that he had had with his son and Ginny yelling at them to shut up because their youngest child, Lily, was sobbing with fright on the stairs. There was bad feeling in the house for three days afterwards and at least a week before Lily could look him in the eye without blanching.
"Well it started up again. Not just the nastiness on Facebook but also fights in the corridor. Scorpius ending up with his ears blown off by James, who got himself involved in his younger brother's fight. It was lucky we could fix his ears back on again and restore normal hearing. If there are any more incidents like that we will have to expel both of your sons!"
Harry said nothing; he had seriously injured Draco with Sectumsempra in the past.
"Draco has managed to persuade his son to leave the argument, so if you could exercise similar restraint over your sons it would be greatly appreciated."
"Lily hasn't been involved, has she?" he asked.
"No, she has been very well behaved, with only one incident with Prudence Stroad, who was attempting to get her in a head-lock. Prudence found herself on the receiving end of one of the best bat-bogey hexes I have seen since her mother Ginevra." She replied almost fondly.
"Of course we had to reprimand her," she continued hastily, "but she only lost 10 points from Gryffindor whereas Prudence lost 50 points from Hufflepuff."
Harry tried not to be surprised at the thought of the usually mild Hufflepuffs attacking a Gryffindor second year.
"Secondly, will your children be going home to number 12 Grimmauld place this Christmas? As usual all of them failed to inform us of what they were going to do. We don't want another scene like the first year James came here."
Harry winced as he remembered his son coming home and a minute later a howler addressed to James being delivered by owl. The nine year old Lily had nightmares for days and hid every time a letter was delivered for ages.
"Yes they will. We're having Christmas dinner with the Weasleys, Longbottoms and Teddy Lupin."
"Ah so Rosie Weasley will also be going home at Christmas too?"
Harry laughed; she was in the same year as Albus and was just as forgetful when it came to Christmas.
"Yes, Rosie also."
"Okay." McGonagall noted this information down, "Now I have something important to discuss with you."
Harry sat up straighter on his chair, waiting.
"It seems that the late Professor Dumbledore had not finished showing you the wonders of the pensieve. I was sorting through my files yesterday and I came across a letter from him to me. It told me to show some memories to you. I have seen these memories myself and they are very interesting. It follows a young girl who attended Hogwarts from 1938 to 1944, a girl who is related to you."
Harry almost toppled off his seat in excitement.
"How is she related to me?"
"I'll let you work that out for yourself. I could barely believe it myself but it is all written down in the letter. We will be following her life from when she was eleven until when she was about twenty three."
She got up and walked over to the cabinet in which the pensieve was always held. She took it out and placed it on her desk. There were already silvery memories floating around in it. She tapped the surface with her wand and it became very deep and black, like a corridor.
"Let's go back in time to about seventy years ago." McGonagall whispered in a mystical, ethereal voice like Trelawney's used to be, "After you."
Harry leant forward, his nose touching the surface. He felt a tipping sensation and his feet left the floor.