It was a peaceful day in Ponyville and the girls were at Sugarcube Corner watching some old photos.

"Heh, look at us! Fresh graduates of the Flight Academy! Haha look at Fluttershy trying to hide behind me!"

"Silly filly! You were almost a head taller than her, how did you think you could hide behind Dashie?"

"Rarity, you are covered in mud on this picture,"

"Oh yes, the pig catching contest. My parents forced me to participate in such an uncouth contest..."

"Oh cheer up sugarcube, we had fun, plus it was the day we became friends!"

"Umh yes it was. I guess it wasn´t such a bad day after all,"

"What´s going on this picture?"

"Thats the day Fluttershy arrived to town, Spike."

"And where is she?"

"Ha where else? Hiding behind that bush! Pinkie made her jump higher than she had ever jump before!"

"...she startled me."

All the girls laughed while Twilight put down the album with a small smile. "You know, I´m a little jealous. You all have memories from before you knew me, all those wonderful days you shared."

Twilight friends hugged her to cheer her up. All but one. "They were not all that wonderful, darling."

"What do you mean Rarity?"

"There was a terrible day, a day I will never forget."

"Ugh, not this again!" Rainbow lamented, stretching her eyelids in frustration.

"It was a dark and stormy night..."

"It was a bright day," Applejack interrupted her.

"...and I´ve just finished my latest creation!" Rarity continued, ignoring her. "A beautiful party dress, covered in jelly beans. It was both cheerful and delicious, it was going to be the center of attention in our school party; but before my classmates could rejoice in my creation...it was destroyed!"

Everypony gasped.

Well, actually only Spike, Twilight and Fluttershy did, and the last one had no reason too.

"Some vicious criminal devoured my masterpiece, it was the worst crime ever committed in the face of Equestria!" Rarity make sure to push a seat before she dramatically fainted.

"And you never caught the culprit?" Twilight asked, getting way too much into the story.

"Sadly no...but I have my suspicious. For years I´ve suspected of one pony and only one pony, the one who has always hold a grudge on me for being prettier and more talented, the pony known as...Cheerilee!"

"Yes?" Cheerilee asked, since she was just in the other corner of the room talking to Lyra and BonBon.

"You have always been jealous of me, ever since foal school. Admit it!"

"Ugh this again? I didn´t ate your silly costume, Rarity!"

"Silly? How dare you?!"

While the two mares argued, Twilight smiled, intrigued by the story. "This is actually quite a mystery. Maybe I should take a look at this. Pinkie, want to be my assistant once more?"

"Euh I...I´m sorry Twi I have...ugh I have work to do in the kitchen." and she retired, acting very suspicious.

"Well in that case, want to replace her, Fluttershy? You are always making good observations."

"I think I better go help Pinkie on the kitchen. I don´t like interrogating ponies." And she retired too.

"Well I can´t ask Applejack because she was a witness, that leaves you, Rainbow."

"Hey why me? Why don´t you ask Spike here?"

Spike was currently busy biting on Cheerilee´s leg while BonBon and Lyra tried to pull him out.

"...good point."

****

Inside the kitchen, Pinkie was frantically running around, putting empty bowels in the oven and baked goods inside the dishwasher.

"Pinkie, are you sure you are okay?"

"Of course I am! Why wouldn´t I? I´m as happy as a sandcolt not that I´ve ever seen a colt made of sand before what do ponies meant by that anyway?" she answered while putting a frost cake in the trash can and the garbage inside the fridge.

"Oh well if you say so, Pinkie. Why don´t you let me take care of things here for a while, you know, in case Twilight has some questions for you?"

"Questions?!"

"Well yes, you were there that day, weren´t you? Me and Rainbow came a few weeks after the incident but you were here when it happened, right Pinkie? You were there that day...Pinkie?"

Pinkie didn´t turn around she just said "I´m sorry, Fluttershy."

"About what?"

"About this."

****

"...thats very useful information Big Mac. I´ll let you know if I need anything else, understood?"

"Eeeeyup," the stallion said, while keeping his hoof down on Spike´s tail so he won´t attack Cheerilee again.

"Now we have plenty of witness information. What do you think of the case so far, Rainbow Dash?"

Her answer was a snore.

"RAINBOW!"

"What? I think it´s boring! All you do is ask, ask and ask again. Can´t we just punch somepony?"

"That´s not how a detective acts, Rainbow."

"Not in the boring novels you read...." she murmured.

"What was that?"

Before she could answer, a scream came from the kitchen. Mr. Cake was the first one to rush since it was his wife who yelled. When they all got inside, they found Mrs. Cake standing over Fluttershy body.

"Mrs. Cake, what happened?"

"She is...she is..." And Mrs Cake broke in tears.

While her husband comforted her, Rainbow Dash approached her fallen friend.

"Oh Fluttershy...what the hay is wrong with you? You know you´re allergic to peanuts and you ate a whole jar of peanut butter?! Are you crazy?!"

"It...wafmt...mi....foult,"

"...come again, sugarcube?"

"She is saying she didn´t do it. Somepony forced her too. Look at her hooves, they´re perfectly clean. Had she ate the butter, her hooves will be dirty."

"But what pony could do something like that?" Cheerilee asked.

"The only pony who was here was...where is Pinkie Pie?!" Twilight yelled.

They all looked around until they heard sounds coming from upstairs.

"Her bedroom!"

Everypony rushed upstairs, Rainbow carrying the inflated Fluttershy. They found Pinkie rushing around her room, packing a suitcase with all sorts of things including Gummy and a kitchen sink while the babies laughed at her antics.

"Its all over, Pinkie Pie!" Twilight announced, causing Pinkie to froze in mid-air. "You have no way to escape."

"Pinkie, why did you do that to Fluttershy?" Applejack demanded to know.

Pinkie didn´t answered but trembled in fear.

"I know why she did it. To cover her tracks, Fluttershy must have figure out something, probably Pinkie gave herself away by saying the wrong thing..."

Twilight was right in the zone but Rainbow had no patience. "Could you drop the act and said that Pinkie ate the dress already?"

Twilight sighed. "You really don´t care about following the formula, do you, Rainbow? Yes, Pinkamena Diane Pie...you are the culprit!" And she pointed at Pinkie with an accusing hoof.

Pinkie tried to fight back but she finally cracked. "YES! I did it! I confess! I did it all! I ate Rarity dress back in school, I fed Fluttershy the peanut butter so she won´t talk, I stole Dashie´s Daring Do costume and got it dirty with mud and when I tried to clean it I made it worse so I hide it under my bed and never told her!"

"Pinkie!"

"Well Pinkie Pie, you´ve been hiding this secret for fart too long, now its time you face the consequences..."

Pinkie hung her head low waiting for Twilight judgement.

"What consequences, Twi? She just ate a stupid dress like ten years ago, we would have eat the costume anyways after class." Applejack the voice of reason pointed out. "The only real crime here are two ponies holding a grudge for absolutely no reason for far too long."

A little embarrassed, Cheerilee and Rarity looked at each other.

"Apologies accepted."

"Apologies given."

"Great. Now that everything is over, lets go get Fluttershy some medicine before she keeps getting bigger," Applejack sentenced and everypony went downstairs.

Pinkie sighed, the weight on her shoulders finally gone.

Rainbow Dash came back to the room, grabbed her costume out of the bed, gave Pinkie a menacing glare and then returned back downstairs.

"....sorry."