The Doctor explained everything in great detail and I watched Dean and Sam slowly warm up to him. I felt a smile slowly crawl across my face. Dean glanced at me and I tried to hide my smile but he saw it. He smiled back and I smiled wider.

After the Doctor was done explaining, Dean took a deep breath. "Alright, Doctor, we believe you. It seems from what you're saying, you do the same thing as us."

The Doctor stopped him. "There is one thing that separates us. I try not to kill everything that causes havoc."

Sam sighed. "Alright, I think we need to team up and defeat whatever you're hunting."

The Doctor had explained that he was following his worst enemy, another Time Lord, the Master.

"He's clever, he's very clever," he explained.

I caught myself smiling. I remembered that smooth voice. I remembered the Doctor talking to me just in the TARDIS, about anything. We'd sit in the console room for hours just talking about our lives and where we want to go next. My hand instinctively moved towards the Doctor's. I used to hold his hand when he was scared or nervous. I was his security blanket, and he was mine.

"He isn't easy to defeat. Last time we met…it wasn't pretty," he muttered.

I remembered it. My worst nightmare was the Master. I may always be afraid of him. I shivered when I thought of what he did to me. Images flashed across my mind of him and I tensed. Sam saw me tense and grasped my hand.

"Ari, what's wrong?" he asked.

The Doctor held my other hand and sighed. "She's met him before. She knows what he can do."

Dean tensed and stood up. "Great, so now she's in even more danger."

Just then, I got a phone call. I stood up and left the group to answer. I checked my phone and groaned.

"No…" I muttered.

Sam glanced over at me. "What?"

I sighed and answered. "What do you want, Sherlock?"

Sherlock Holmes had called me. I used to work with him. Before I met the Doctor and the Winchesters, I visited England and met Sherlock and his partner, John Watson. Sherlock was a consulting detective and I helped him. We became what John would call friends, but Sherlock never considered me a friend and I never considered him a friend. He was just my partner.

"Ari, I'm ashamed to say this, but…" Sherlock trailed off.

"We need your help," John finished.

I scoffed. "You need my help, Mr. Detective? Why?"

Sherlock groaned. "We're…stuck…"

"What's the case?"

"John and I are following a mastermind who turns up in random places in random points in time."

I groaned. "What more do you know?"

Silence. "That's…it…"

I resisted the urge to burst out laughing. "Wow, Sherlock! You've sunken pretty low, haven't you?"

"Ari, please help us," John pleaded. "We don't know what this thing is, and we think it's dangerous."

I decided just to tell them. "He's not dangerous and he's right here with me, along with my cousins."

I gave the phone to the Doctor. "Hello!" he exclaimed.

The Doctor listened to the phone and nodded every once in a while. "Interesting language you have there," the Doctor said finally.

I sighed and took the phone back. "Sherlock, we're currently tracking down someone much more dangerous than the Doctor. We'll pick you up. Don't worry, we have a ride."

I glanced at the Doctor and then at the TARDIS. The Doctor chuckled and ran to open the doors. I smirked at Sam and Dean, hung up the phone, and followed the Doctor into the TARDIS.