A/N Once again, I apologize for the long wait. I just recently earned the right to play my PlayStation again, and have been using my time to obtain all of the trophies for Skyrim. As an apology, I'm going to tell my little wanderers the chapter titles for the chapters that I've finished so far:

"Unlikely Roommates" & "The Theory of Everything"

And now, onto the chapter!

The 12th Doctor

"What are you doing now?" Logan said in a tired voice, looking at the Gem technician.

"The audio synthesizer was not functioning at full efficiency." Peridot answered, not looking away from the computer console that she was taking apart, "I have taken the liberty to increase the efficiency at which the synthesizer operates. While I was working, I recalibrated the signal network, improved the quality of audio emissions, renewed the circuitry of the console, and replaced the thermal barriers on the wiring." She finished with a proud sense of accomplishment.

"... What?" Logan asked in bewilderment, having not understood a single word of what the green woman said.

Peridot sighed, before opening her satchel bag and removing, what Amethyst called, her "nerd translator". A few weeks ago, Connie had suggested that the technician begin carrying around a small notepad, which was filled with the words that she would commonly use, such as " signal network", and words that she could use around people who wouldn't understand the technical terms, like "WiFi".

Flipping through the notepad for a few seconds, Peridot looked up at Logan and said, " I made the stereo system better."

"Why didn't you just say that in the first place?" He asked, before shaking his head. "Nevermind. I don't really care. Just, don't break anything, or my boss will have a hissy fit."

"A what?" This time, it was the Gem who was confused. Logan just shook his head and returned to taking orders for the customers.

Deciding that she could learn what a "hissy fit" was later, Peridot finished putting the café's stereo system back together. Looking around the small office, the technician was unable to find any other devices that required maintenance, and left, making her way to the café's main room. Taking a seat on a stool by the counter, she reached into her bag and removed the small entertainment device that Steven had given her to use, something designated as a "Gameboy Advanced".

Activating the device, she immersed herself into her game of "Tetris", being rather adept at the game, as she marveled at how its difficulty was derived from its simplicity. As she played, she was soon approached by Logan, who claimed that he was on break. The human sat down next to her, placing two cups a dark brown liquid on the counter. Picking up one of them, Peridot took note of the wisps of steam coming from the cup.

"What is this substance?" She asked, smelling the liquid and being met with an oddly bitter smell.

"It's called coffee." Logan told her, taking a large gulp from his own cup and remaining unfazed by the scalding temperature. "It's a drink that's full of caffeine. Humans drink it because it gives us energy and helps us stay awake."

Looking back to the liquid, Peridot took a careful sip, finding the bitter flavor to be very pleasant. After she had finished the drink, the technician felt as though she was bursting with energy. Thoughts racing, she hopped off of the stool and ran back to the office, immediately beginning to disassemble the internet router. Minutes later, she was putting together an improved version. Standing up, she turned to run out of the office to find something else to repair or improve, but was stopped when Logan entered the room, resulting in the technician running straight into him.

"Okay, Greenie, that's enough!" He said, grabbing her shoulders to make sure she didn't run away again. "You need to use that energy for something other than taking apart this cafe."

"Like what?" Peridot asked, literally shaking with energy.

"Umm..." The man thought for a moment, before suddenly saying, "Can you run back to my apartment, grab Toby and his leash, and bring him back here?"

"Why?"

"Because my shift will be over soon, and I was going to take Toby for a walk." He explained.

"Okay, okay, that's easy, I can do that!" Peridot said, speaking rapidly. With that, the Gem turned and ran towards the door, hitting the glass face-first when it didn't open.

"Pull to open!" Logan called from the kitchen, having expected the Gem's action. As Peridot left the cafe, the human thought to himself, 'Amethyst, your surprise better be worth going through all of this...'

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"You okay? Feeling alright?" Logan asked an hour later, walking through the park with Peridot and Toby.

"My head hurts..." The technician grumbled, placing a hand on her head.

"Well, now you'll remember not to drink so much coffee so quickly." Logan said smugly, looking away from the Gem. The small group reached an empty park bench, where Peridot collapsed onto it, body drained of energy.

"Why am I so tired?" She complained weakly, "You said that coffee was used to provide energy."

"It is. However, coffee, like time, will take what it's owed." When she looked at jim in confusion, he continued. "Coffee will give you energy when you need it. But, later on in the day, the same chemicals that gave you energy will begin to make you feel tired. Because of this, most people only drink coffee when they wake up in the morning. This way, by the time the chemical begins to affect them, their body has already produced energy to combat the tiredness."

"You should have told me this earlier..." Peridot groaned, making Logan laugh again.

"Logan! Hey, Logan!" A gruff but happy voice called out, catching their attention. They turned to see an old man walking towards them, waving, with a wide smile on his face.

"John!" Logan called to the man, "Where have you been? I haven't seen you in ages!" He asked, walking to meet the man in the light-blue uniform.

The old man gave a merry laugh as they shook hands. "The postal service had assigned me to work up at the post office. They said something about it being better for someone my age. The bastards." Logan laughed at his answer.

"So what happened? What got you back in the field?"

"Well, a few days ago, that young kid, Jamie, broke his leg." John explained, "So, while he recovers, they sent me back out. I almost want to thank the boy!"

"Yeah, well, it's good to see you again. I know Toby's missed you."

"Speaking of Toby, where is he?" The old man started looking around the park. "Toby! Where are ya, boy?"

Toby ran up to the mailman, full of endless- To Peridot anyway- energy, jumping and running around John's legs. As the dog begged for attention, John's loud, merry laughter filled the air. As he laughed, he said the most peculiar thing Peridot has ever heard:

"There he is! Toby: The Mighty Wonder Dog!" He yelled, petting the dog all over.

"Toby the… What?" Peridot asked, making the old man realize that there was another person with them.

"What- How long have you been there?" John asked the green woman.

"The entire duration succeeding your arrival." She answered.

"And you haven't introduced yourself?" The old man stepped forward, holding out his hand, "John Smith, Beach City's veteran postal worker. It's a pleasure to meet ya!"

The Gem shook his hand, remembering that it was common gesture in Earth introductions. "Peridot, former Gem technician and certified Kindergartener. I am pleased to make your acquaintance Mr… John… Smith..." Peridot trailed off as her mind fully registered the old man's name.

'An old, human-looking male, white hair, tall and skinny, and named John Smith?' Peridot listed in her head, staring at the mailman.

The technician reached out and poked the old man in his chest. "Doctor?" She asked softly, unaware that, to anyone watching them, she looked like a child who was trying to check if their favorite superhero was really standing in front of them.

"The what?" John asked, looking at the strange little green woman, "I think you're confusing me for someone else." He glanced at his watch, eyes widening at the time. "Whelp, it was nice meeting ya, Peridot, and it was great to see you again, Logan. I gotta finish my route."

"It was good seeing you again too, old man. We'll see you later." Logan said, speaking for himself as well as Peridot, who was still staring at John's retreating figure.

Logan turned to Peridot. "What was that all about?" He asked, bringing her back to reality.

"Uh… It was nothing." She answered. The human looked at her suspiciously, but his cellphone began ringing, taking his attention away from the Gem.

"Well, the Crystal Gems are back." He told her a few minutes later, "I guess it's about time we head back to the temple." Putting Toby on his leash, the two left the park, Peridot not saying a word the entire time.

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"I found him." Peridot said suddenly, making Connie look at her. The human paused the episode of "Doctor Who", ensuring that they didn't miss a second of the season finale.

"You found who?"

"The Doctor."

Connie's eyes widened. "What do you mean? Where did you find him?"

"At the park. He was masquerading as an old postal worker named John Smith."

"Really?!" Connie squealed in excitement, "Oh, Peri! Tell me what he was like!"

"He looked different," The Gem explained, "But he was old, wrinkly, and very tall and lanky. He sounds nothing like he usually does, but there was no mistaking that it was him." She finished, her voice full of determination, leaving no room for any arguments.

"You're so lucky! I wish I could have been there!"

"I do too. You would have agreed with me. Hopefully, he will not leave before we can see him again."

Connie fell back on the couch, sighing happily, before suddenly remembering their show. "Come on, let's finish this episode. We'll have to tell Steven about what happened to you today!"

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A/N Reference Contest! I've hidden a special reference inside this chapter! The first review that correctly names it will receive these wonderful prizes:

1- A name/ face reveal!

2- A free story request!

3- A sneak peak at the next chapter!

Happy hunting, my little wanderers.