Derpy carefully put the letter back where she found it and thought of what to do.

Note and Rarity should still be downstairs...

She made her way back up the trapdoor and onto the roof again, closing the trapdoor behind her. She took to the skies and flew to where Rarity's bag should be.

"Oh, but don't you want to stay, darling?" asked Rarity, "I can make tea, or-"

"No," said Note Pad, "I'm fine, really."

He wordlessly moved into the kitchen and searched high and low there, with no results. He checked every room on the first floor and found nothing.

"Can I check upstairs?" he asked.

She smiled. "Certainly!"

He ascended the staircase and reached her bedroom, opening the door and heading inside. Everything looked clean and tidy.

"I don't think it's in there," said Rarity. But I can tell the other girls he was in my bedroom now!

He stepped into the middle of the room, looked under her bed, and found nothing. Nothing but a small yellow hair lay on the floor. He picked it up and examined it.

"Do you dye your mane?" he asked, looking at the hair closely.

"No," she said, "Well, my mane wasn't always purple, but-"

He ignored what she said and went over to nightstand, finding a letter. It appeared to have been tampered with. He quickly read it as Rarity continued rambling, then set it back into place.

"Nevermind," he said, as he looked up and saw the trap door. "I should get going," he said with a smirk.

He turned to face her, but she was already lying on her bed. She giggled, which got his attention.

"Miss Rarity?" he said.

Rarity posed and pouted on the bed, a hoof under her chin. She looked at him.

"Are you suuuure you can't stay a little longer~?" she coaxed, her eyes glistening.

Derpy was here. She definitely knows something. he thought.

"Maybe another time, Rarity," he said as he exited her bedroom quickly, "But I really must be going!"

He galloped down the stairs and out the door.

"Why do they always run?" asked Rarity with a sigh.

Derpy flew overhead to Sweet Apple Acres. She had delivered packages there before, and was used to flying above the large open field. She approached the house and knocked eagerly on it.

"Hold yer horses, Ah'm comin!" heard Derpy. An orange earth pony mare opened the door and looked her over.

"Well howdy, Derpy! What can I do ya for?"

"Hi Applejack," said Derpy, "Can I check your barn?"

"Pardon?" said Applejack, tilting her head to the side.

Derpy sighed. "I need to check your barn because I'm pretty sure Rarity left her saddlebag in there."

Applejack stared blankly. "Wait, why?"

Derpy looked nervously to the side. "Oh, I dunno, maybe... reasons..."

"She left her bag in mah barn because reasons?" said Applejack, "And what's with that hat? And why are you wearing pants? And a watch? You're a mailmare for pony's sake."

"Rrr, I'm a detective now! I solve cases and make awesome amounts of bits and bought this hat, these awesome pants-" said Derpy, shaking her flank to prove her point, "-and this awesome watch! I'm in a race and need to find Rarity's bag-"

Applejack stuck her hoof in Derpy's mouth to silence her. "Whoa there, calm down. Alright whatever."

Derpy grinned and went to Applejack's barn. She opened it up and peered inside.

"Where's the light switch?" said Derpy aloud to Applejack."

"It's a barn," said Applejack.

"What's your point?"

Applejack rolled her eyes. "Is the bag in there?"

Derpy went in circles, checking every nook and cranny of the barn, inside and out. She gasped.

"I found it!" she exclaimed, holding the large, bedazzled saddlebag up. She beamed. I won the competition!

"Ah don't understand," said Applejack, "Why was Rarity's bag in mah barn?"

Derpy slung the bag on. "Well," she said, "Rarity's bag was in here because Rarity and your brother had a little rah... randy... randey..."

Applejack tilted her head. "A what?"

"Randei... ra-they had a meeting." Derpy said simply.

"A meetin'? What for?" asked Applejack.

"Well," Derpy shuffled a hoof on the barn floor, "It uh... it's like, a meeting for "adult" ponies. I found a letter in Rarity's bedroom. I guess she's been seeing your brother for a long while now."

"She what!" exclaimed Applejack, red in the face.

"Your brother has baaaad hoofwriting..." said Derpy.

Derpy and Applejack exited the barn as Note Pad came walking down towards them. He took a look at Derpy and smirked.

"I see you found the bag," he said.

Derpy posed proudly. "Heck yeah I did! I win! I can still be a detective!"

"Refresh my memory, what would you get if you won again?" asked Note.

"I would..." Derpy blushed and looked away.

Note Pad smiled behind his sunglasses. "You would use the bits to take me out to a date?"

Derpy didn't say anything. She just blushed and looked at the ground with her crooked eyes.

He tried changing the subject. "You practically cheated. I should have said no wings allowed."

She looked up again. "I didn't cheat! It's your fault for not mentioning it!" She narrowed her eyes, and he pressed on.

"You completely cheated," he said, smirking, "I would have won if it wasn't for your wings. I'm surprised you could even see properly with those eyes of yours."

Derpy was frustrated. "You're just mad because I made a hundred bits!"

"By cheating," he added.

Derpy growled, and Applejack laughed.

"You two would make a funny couple," said Applejack. Derpy blushed again and gritted her teeth.

"No we wouldn't!" said Derpy.

Note Pad looked at Applejack. "Did Derpy tell you about..."

Applejack's expression turned to one of distaste. "Big Mac is in fer a heap of trouble..."

Derpy wore Rarity's saddlebag as she walked through Ponyville with Note Pad, on their way back to Rarity's boutique.

"Nice move using the roof," he said.

Derpy fluttered her wings. "Being a pegasus is awesome!"

Note Pad nodded. "I hate being an earth pony sometimes."

"Really?" asked Derpy.

"Yeah," he said, "Sometimes I'd like to try magic, or fly through the sky... Just to feel the breeze on my coat and everything."

Derpy frowned. "Sorry about that."

They continued walking towards Rarity's boutique, when Derpy suddenly tripped and fell over, hitting the ground hard.

"Owwww!" she said.

Note Pad laughed. "Good one."

"Aren't you going to help me up?" she asked, waving a hoof up.

"Why would I do that?" he said, smiling.

Derpy sighed and got up, dusting herself off. She rolled her eyes. "Let's just keep going..."