Alchemist's diaries.

"What?! Your mom got murdered?!"-asked Pinkie giving me second shot of whiskey-"That's terrible! Who did that?!"
I took a sip of alcohol and I murmured:

"I dunno being honest. I wanted to see my mother. She's been gone since. Three years. And now? She's dead. I need a revenge on that pony who done this"

"Starlight. I know this letter. Rarity told me about this today and I got worried. Go to Zecora. She knows everything what you will need to find that pony who done such awful thing to your mother"

"I don't think I need anypony's help right now. It's too much for me to take."

"Hey. Look on the brighter side..."

"You call somepony's death nothing?!"

"N-no! Look. I lost my mom few years ago. She died because of cancer"

"Cancer and murderer are different kinds of death. I need answers who slaughtered my mom. I-I need everything! But please! Help me to find it!"
Pinkie gave me the smirk.

• Hello! I am Twilight Sparkle! What do you need?-the purple unicorn stared at us smiling like the total idiot.

"You can read letters by the sign. Right?"-asked Pinkie. Twilight nodded and she got my letter.

"Let's see. The first letters doesn't make sense. But if you will get Fillydelphia and situation. It becomes much clearer who is that. It can be everypony in the castle. Even princess. So have eyes wide open. Have nice night!"

"Thank you!-spoke Pinkie. My eyes go wide as I stare in anger.

"And? That's all?! No more clues?!"

"Starlight. You are alchemist. You can find out who is lying"
That was right. I would had find out who is lying. But. How am I suppose to make it?

"Feeling better?"-asked Pie Hater Dash coming to my room. I opened my eyes and I sit on the bed yanking.

"Never better."

"Look. I feel sorry for what happend. But chill out. You can join me and AJ! At baking. Or. Just me,Sunset,Bon Bon,Trixie,Tempest Shadow and Lyra in being just guard"

"No thanks. Thanks by some sleep I finally accepted what happened."
I was lying. But it wasn't in bad intentions. Demon pony gave me the smile as she gave me guard helmet from the bag.

"If you will change your mind. I will be today in the castle with few other ponies"

"Thanks Pie Hater. Speaking about ponies.."

"Yeah?"

"Do you know anypony who murdered my mom?"

"Honestly no. But try to visit Twilight. She reads letters in special way."

"I already done that. She said that could be everypony in this castle. Even Fluttershy."

"Well. That's good. Tell me. You have this lie test machine. Why you can't use it?"

"Because it isn't working like it should. I planned to make very well working machine what will see who is lying and who isn't. Instead it gaves you anesthesia and that's awful."

"Ouch"

"Yeah. I know. I will fix this machine probably today."

"I don't want to disturb you. I know you have now hard times..."
I didn't had being honest. Just for you to know. I am one of the ponies what believes that karma will come back. Just I knew Pie Hater spends half of her week in the castle. Not outside. The other half she works with Applejack. Tempest opened the doors staring at Pie Hater.

"Akhem. Fluttershy told me to come and see Miss S.Glimmer how she's feeling. Ah. And keep an eye to my step daughter-Rainbow Dash. That's Chrysalis's order. I heard she begun to feel worse. Obviously she couldn't get stressed by this whole execution!"

"Should I send Trixie? Or Lyra and Bon Bon?"

"Pie Hater. I swear to the princess. It can be everypony! Just go and make sure she'll feel better"
Pie Hater gave Tempest a smirk.

"Fluttershy told me that I need to take care of Starlight."

"Well. Okay. Order is order. I will go and find M.Glimmer's body. If she got lost near Fillydelphia. Then I can make sure she'll be very near than I expect"
The purple unicorn with red hair came out from the room and closed the door.

"I gotta go."

"Where? To destroy pies?"

"Awwww man!"

"I thought you had stopped doing that!"

"Well. I did! But. It's too strong for me! It is sooo relaxing!"

"Pie Hater. Please."

"Well... I am serious! It's not like I am addicted to destructions. Especially where pies are involved!"

"Ugh. Just go. And guess I need to come back to the woods for few days."

"No! Don't leave yet! Look,Starlight. I know I did wrong choosing over watching prisoners,destroying pies. But hey! I will tell Fluttershy about that problem and she will send me..."

"Fluttershy will not send you to a therapy. You need by yourself to stop doing that. In meantime. Maybe my machine will got real murderer of my mom. Twilight told me that this can be anypony in this castle! I wonder who?!"
I laughed insanely. Okay. Maybe that behaviour was useless. But I knew what I had been doing. Like Rainbow Dash said. Everypony deserves from the crime punishment. And so now. I can make by myself execution. But. On who?

I stared at the machine what was printing answers and the picture of the pony who did the crime. Hour by hour. I was becoming more and more insane. Bella hidded from fear under the table whimpering.

"It's okay,Bella. As soon as this pony will get printed. I will kill this guy. And hang his dead body here!"
The raccoon stared at me with anger.

"What? This pony deserves proper punishment. You know what they did?! They killed my mom! The closest person in my family,damnit! I'll tell you something. If my mom could had been still alive. I would right now spend with her time instead of analysing! I mean. This is the worst week ever! I told the whole hospital that I am in heat,my mother died. And... They will pay for that."
Meanwhile machine stopped printing the results. I stared at the piece of paper and I yelled happily:

"Finally! Let's see the results!"
I stared at the picture. It was presenting yellow mare with pink hair. I letted out a gasp in shock and then I letted out the most insane laughter in my life.

"I knew it! This whole happy face was all lie! She killed my mother! And she is a princess?! Ha! Let's see. Her birthday is next week. On Wednesday! Oh. She will get the best gift ever. Indeed..."