Bonus chapter - written for International Fanworks Day 2019 and posted then on AO3.
The next morning in the common room, Marisa was curled up in one of the snuggest armchairs, reading Return of the King. She'd seen the movies over the summer and had been binge-reading the books ever since but had still only just started this one, having not had time last night after finally discovering the counter-curse.
"What's that you're reading?" asked Leo, who was the only other student awake as it was half past six in the morning.
"Lord of the Rings," said Marisa. "Muggle fantasy. Epic."
"What's it like? Would I like it? It'll get me some bonus points when I take Muggle Studies next year if I've already read Muggle literature."
Marisa glanced up. "I think you would. This is the third part, though. Let me go and get the first one." She dashed up to the girls' dormitory and returned a minute later with a copy of Fellowship, which she handed to Leo.
An hour later, Marisa reluctantly put down her book in the middle of the Battle of Pelennor Fields. "We should get breakfast," she said.
Leo stood up and pulled a bookmark out of his pocket. "Do you want to go and put them in your trunk? I don't think Draco or Pansy or that lot would take kindly to Muggle books."
"Good thinking," said Marisa, "I'll do that now." She hurried off upstairs and when she returned the pair walked down to breakfast together.
"Where've you got to?" asked Marisa.
"You shall not pass," Leo quoted. "Gandalf's just fallen in."
"Thoughts so far?"
"It's epic, like you said. The characters don't seem to have much regard for their own lives to go on a suicidal quest like that. Which I don't mind. That abyss scene really took me by surprise, though. He's Gandalf! He can't just die!"
Marisa smiled knowingly, but said nothing.
"Plus, I got one of those weird feelings about the abyss. You know, like I remember it?"
"Oh!" said Marisa. "The first time I saw it I actually got the same feeling!"
They looked at each other strangely.
"This has gone way too far to be a coincidence," said Leo.
"Yeah. It has. Do you have any clue what we can do about it?"
"No. Except writing down everything that gives us this feeling."
Marisa nodded and the two took their places at the Slytherin table. Draco was opposite them, so they could talk later.