[WP] An old library in Germany offers an "amnesty day" where overdue books can be returned with no fine. Someone returns a Gutenberg bible.

“…so you see, I couldn’t possibly return the book on time.” The retiree had been droning on with excuses about why the book was late. Personally, Fynn thought she purposefully kept it, so she could blab at him.
“Don’t worry. That’s why we have amne-“
“You’re such a sweet young man. Not even the least bit judgmental. You remind of…”
The sweet old lady just continued to talk at Fynn. He really wanted her to stop talking and just leave, but he had already been reprimanded for rudeness. He just nodded and smiled and pretended to listen as she rambled on. Rationally, he knew she was just lonely, but he wondered why she couldn’t just use the book drop like everyone else. 
The old lady’s soliloquy was finally interrupted when the library door flew open causing the old bells to make a raucous that could probably be heard all the way up in the head librarian’s office on the third floor. The old lady’s head whipped around to a better look at the new interloper. 
A university student was quickly striding across the floor to the service desk. His hair stood up in all directions and he had a patchy growth of facial hair that probably hadn’t seen a razor in at least 3 days. The student’s clothes were messy and his shirt had a prominent tear going from the collar to the middle of his chest. He gripped a backpack in his hands, so tightly his knuckles were white.
The older lady slid out of the way as the student marched to the desk. He opened the bag and slammed a large, old leather bound book on the table. The student shifted uncomfortably and eyed Fynn.
“Are you the head librarian?”
“No, she’s out, but I’m sure I could help you? Did you need to take advantage of the librarian’s amnesty day?”
“Yes, I-“ the student paused as he realized he could see his own breath. The temperature in the room began to drop precipitously. Fynn gasped as the boy lunged forward covering the book. Almost instantly the book began jerking about and lifted the boy a full foot off the desk before he managed to somehow force the book back down on to the counter. “Let go ya old bitch! I’m returning this book and you’re going to hell!”
Fynn fell backwards against the other counter as the other boy continued to yell profanities. Fynn could see frost forming on the left side of the counter and other books and decorations began falling down from the shelves. Finally, after what seemed like an eternity everything stopped. Fynn looked at the boy crouched on the counter. He looked back at Fynn for a moment. Fynn realized the boy wasn’t unkept he was exhausted and probably for good reason. Fynn wanted to ask a bunch of questions or maybe crack a joke, but he couldn’t think of a single thing to say. 
The silence was interrupted by the doorbells jingling again as the pensioner disappeared at a surprising pace. They seemed to break some kind of spell and the student began to speak again.
“I don’t know how long the bitch is going to need to gather her strength again, but I need to return this book to the head of the library as quickly as I can.” Fynn sat dumbfounded staring at the boy. There was a long pause, but then the boy continued. “That was the ghost of Meckel. She was a witch who lived in this town in the 1500s. She borrowed this Gutenberg bible from the monk who was in charge of the monastery that was here before it became a library. She perverted the bible and bound her soul to it. I think I can get rid of her if I give the book back to whoever runs the library now and they forgive her.”
“What?”
“My name is Oskar. I’m not crazy and I really need to get this book to the head librarian.” The student looked, so earnest. He looked like he was about to cry and Fynn had enough evidence to believe him. Fynn swallowed hard and braced himself for the boy’s reaction.
“I’m really sorry. But she’s not even here. She’s out of town on a vacation.” Fynn saw the heartbreak spread across the other boy’s features. He could see the boy’s posture slump in defeat. Normally Fynn was much more stable than this, but maybe this was his time to go on an adventure. An adventure with a scruffy, but handsome university student. “But I know where she is staying and we could go together…”
/r/WritingPrompts Thread