The trio sat down in the compartment of the Hogwarts Express, and looked at the sleeping man.

“Who d’you reckon he is?” Ron asked.

“Professor R. J. Lupin,” said Hermione, as Harry simultaneously said “Remus Lupin.”

“How d’you know that?” Ron questioned.

“It’s on his case,” she replied, pointing at the luggage over the man’s head. She then turned a questioning gaze at Harry. “Do you know him?”

Harry nodded. “Oh yeah, I recognize him from the photos Hagrid gave me. And when I found some of my dad’s old letters, a lot of them mentioned a ‘Remus Lupin’. He was close with my Dad. Like, very close.”

Ron nodded, while Hermione narrowed her eyes. “What exactly do you mean, Harry?”

“I mean, he and my Dad would sometimes spend the night together.”

Ron’s eyes widened, while Hermione let you a high pitched squeak.

“And not just the two of them,” Harry added. “There were two other guys who were usually there too.”

Ron’s eyes widened. “Blimey!”

Harry nodded. “I know, right? Snape even tried to join them once, but my Dad wouldn’t let him.”

“When you say ‘spend the night together’, do you mean…?” Hermione asked, blushing.

“Let’s just say that they were going at it like animals.”