Chapter One - The Man on the Train

As Harry Potter, Ron Weasley and Hermione Granger got into an empty compartment on the Hogwarts Express they noticed there was a man already in the compartment who appeared to be sleeping.
"Who's that?" Ron asked as they settled down in the compartment.
"Professor R.J. Lupin" answered Hermione.
"You know everything! How is it that she knows everything?" exclaimed Ron.
"It's on his suitcase, Ronald." replied Hermione.
"Oh right, I knew that." mumbled Ron.
Harry was barely listening to what was being said. Instead he was concentrating on Professor Lupin. He looks so familiar, Harry though, like I've known him my whole life.
"…It's pretty scary knowing Sirius Black is on the loose." As soon as the words Sirius Black came out of Ron's mouth Professor Lupin seemed to tense up in his sleep.

A lot had passed since anyone had mentioned Sirius Black and the sleeping professor. The lunch trolley had passed and they had all grabbed their favourite snack, gummy wands for Ron, chocolate frogs for Harry and cauldron cakes for Hermione.
Ron was filling Harry in on what had happened at the Burrow over the summer when the train stopped.
The lights when out and everything went still and dead quiet.
It seemed like everyone held their breath, afraid to make a sound. It wasn't until they heard a noise, the sound of the compartment doors opening, that they all let out a big breath.
Harry was the first one to move. He went over and looked out the compartment door, but he wasn't the only one peeking out of their compartment. He noticed that there were plenty of people peeking out of their compartments. Afterward awhile of looking out and seeing nothing he returned back in to Ron and Hermione and told them that he hadn't seen anything.
With that their compartment door slammed shut as the train started to move again. Since everything seemed to be fine they all sat back done. Out of nowhere there was a cold chill and everything inside of their compartment seemed to freeze.
No one said anything; they just looked at each other with terror on all of their faces.
The terror on their faces grew ten times worst as they saw the creepiest skeleton hand on their door handle, and the door handle turned, very, very slowly. Then the door slid open just as slowly, and just as creepily. The terror on their faces continued to grow and it stopped. It stopped as their eyes landed on the hooded figure floating in the doorway. It stopped and turned into pure horror, horror so grave it's nearly impossible to describe; although it was completely dark in the compartment the white in the faces glowed in the darkness.
Suddenly Harry couldn't hear anything that was going on in the compartment. All he could hear was screaming. It was a woman screaming, and she was screaming a terrified scream. I have to save her! Harry thought, I have to find that woman and save her! And then everything went all black and silent.

"Harry! Harry! Wake up!" Hermione shouted.
"Wait," Ron said. "I think he's coming through."
Sudden Harry could focus in on what was happening, but he was very confused. He tried to take in what was around him. I'm laying down, Harry thought, okay, but why am I laying down? I can hear voices, people talking. I think that's Hermione and Ron but there's a third voice. Who could the third voice be though? Harry was too intrigued by the third voice; he couldn't stand there just listening to what was going on around him. He had had enough; he decided to just open his eyes. He tried to but his eyelids were too heavy. Okay, we're going to have to do this slowly, Harry thought. Harry slowly opened his eyes and he could make out three people around him, Ron, Hermione and-
"He's up." The third mysterious voice said to both Ron and Hermione. He spoke again, but this time to Harry and handed something to him, "Here eat this, you'll feel better."
Harry took the unknown food and cautiously took a bite. Chocolate, Harry thought. After just the one bite Harry was starting to feel better. He looked up and now realized that the third mysterious person was Professor Lupin.
"Thanks." Harry said, setting the chocolate down.
"I'm going to go check what's going on, I'll be back in a bit." said Lupin, as he started towards the compartment door. Once he reached the door, as if forgetting something, and said "Eat, you'll feel better." to Harry before leaving.
Once Professor Lupin left Harry started to ask Ron and Hermione questions, forgetting about the chocolate
"What happened?" Harry asked.
"There was a dementor." Ron answered.
Harry gave Ron a look, surprised that Ron, of all people knew what that creature was.
"Professor Lupin told us." Ron said, in response to Harry's look.
"The woman, who was screaming, is she alright?" Harry asked, suddenly remembering the woman's scream.
"Harry, what are you talking about?" Hermione asked, raising an eyebrow.
"There was a woman... she was screaming... didn't you guys hear it?" Harry asked, confused that they didn't know what he was talking about.
"Harry, no one was screaming. Are you feeling alright? Maybe you should have some more chocolate." Hermione offered.
"Yeah, I guess I'm just hearing things." said Harry.
Ron looked outside and said, "We're getting close to Hogsmeade, we should probably change our clothes now.