Summary: What happens when Harry finds a long forgotten book of letters between the Marauders? Why has Remus never told Harry of the book? What can the book finally revealed about Harry's father and Sirius when they were in school? Post OOTP

Disclaimer: I DON'T OWN HARRY POTTER! If I did, I wouldn't have killed Sirius…-tears-

Chapter 1 –Findings-

Harry checked the Marauders map once more, carefully placing the locations of the professors and his fellow students, the ones who weren't off having fun in Hogsmeade. All were a long distance from the fourth floor corridor where Harry now stood. Harry shoved the Map into the front pocket of his robes and turned towards the mirror. He leaned forward and said "dissendium", waiting for the mirror to show the way into the secret passage beyond it. Nothing happened.

Harry furrowed his brow, wondering why the secret word was not working. He leaned over and tried again, saying the word a little louder and with more force this time. Still nothing. He heard loud voices coming from around the corner and quickly checked the Map to see who it was. While Harry was still consulting the Map, two particular red headed twins came around the corner, laughing about their latest prank.

Harry was surprised to see them, as they had quit Hogwarts last year, in quit the memorable fashion. He never expected to see them back, walking the halls like they were heading to class. "Hey guys," he said, causing them to jump. Obviously they had not expected to run into anyone.

"Oh, hi Harry, why aren't you in Hogsmeade?" Fred asked, George nodding beside him.

"Yeah, this is a Hogsmeade weekend, right? I mean, its Halloween weekend, it always has been before!" George piped in.

"Yeh, it's a Hogsmeade weekend, but I got in trouble in Snape's class, and well, he forbade me from going to Hogsmeade this weekend as my punishment…I decided to check out this passage to see if I could get through it. Snape's got an idea that there is a passage by the one-eyed crone. He is walking past there every half-hour to check on it." Harry showed the twins the Map, which now showed Snape walking along the third-floor corridor, right towards the statue.

"Oh, wow, that sucks. Oh well, good luck with this passage. We never actually tried to clear it out before, but maybe you could manage. The password for this one is 'releval', not 'dissendium'. Well, bye." Fred and George began to walk past Harry, but he stopped them.

"Hey, why are you guys here, anyways? I thought you guys were gone for good."

Fred shook his head, looking annoyed. "No, our mum is making us come back to finish out our last year. We have to go talk to McGonagall about it. If we are indeed allowed to return, which Mum thinks it likely because almost everything that happened while that old bat Umbridge was here has been forgotten, we need to work something out with McGonagall about our store. We refuse to give up after such hard work to get it going. And it is going, very well, in fact. But Mom says we at least need our degree, so here we are."

"Oh, well that's cool, I guess, as long as you don't have to give up your store. Have you told Ron you're here? Although, he is in Hogsmeade right now., so you wouldn't be able to see him or anything."

"No, we came this weekend specifically because it's a Hogsmeade weekend. We don't want to see anybody just yet. If we come back, we want it to be a surprise. That way we can pull a few jokes on everybody before all the Houses put themselves back on guard against us. You have no idea how hard it was becoming for us to pull a good prank. Everybody was too wary to walk into our traps…expect Malfoy, Crabbe, and Goyle, of course. But pranking them got a bit old, really quick."

"Yeah, easy targets are boring. There's no challenge, no excitement. We need some better targets." The boom of the clock in the entry announced the hour, and Fred and George look at each other. "Well, Harry, we must be off. We really do need to see McGonagall. See you later." The boys set off down the corridor.

"Oh, and Harry," George yelled back. "Be careful." He winked then, hurried to catch up with Fred. Harry watched the twain disappear, laughing, around the corner.

Harry checked the map one last time and whispered "releval" at the mirror, waiting for the reaction. The glass shimmered and melted, reshaping to reveal a doorknob, which Harry seized and turned, pulling the mirror open like a doorway. Cautiously, he stepped through.

The passageway began as a huge cavern, easily the size of the Quidditch Pitch. He briefly thought that this room would have been perfect to use for the DA if they didn't have the Room of Requirement last year. At the very far end, Harry could see a pile of rocks stacked all the way to the ceiling and his heart fell. The pile was gigantic, much like the pile that separated Harry from Ron and Professor Lockhart when they were looking for the Chamber of Secrets. Harry would be no more able to move this rock pile than he was able to move that one. Maybe I could get Ron and Hermione in here to help me, if we looked up a good earth-moving spell, Harry thought. But even if he did, it would have to wait till later, after the Hogsmeade visit was over. He turned away from the rock pile and back to the door.

Once again, Harry pulled out the Marauder's Map, always extra careful to check corridors before climbing out. He never wanted to repeat the experience when Snape had almost caught him climbing out of the statue in his third year. Lupin put himself one the line for him then, and he never wanted to make anyone have to do the same again. He glanced at the map, something moving catching his eye. The dot that bore the name 'Harry Potter' was walking towards the eastern wall and had a little speech bubble over it saying "Moony, Wormtail, Padfoot, and Prongs are the best". Remembering how the map had showed him how to open the third-floor Hogsmeade passageway in the same manner, Harry did what the map said, walking over to the eastern wall and saying "Moony, Wormtail, Padfoot, and Prongs are the best".

A small piece of rock slid aside in the wall, revealing a good-sized hole with some stuff in it. Harry put down the map and looked inside the hole. There was a leather-bound book, a rolled up piece of parchment, and a smaller book that looked to be a photo album. Harry sat down and began pulling these items out, carefully examining them before putting them down and grabbing the next.

Author's Note: This is my first attempt at Harry Potter fanfiction, what do you guys think? Should I keep going? I have four chapters planned out so far, and that's only the beginning, so I will keep posting them, but reviews always help me write faster . So yeah, I hoped you enjoyed the story! More will be up soon. Iyoku-chan