"I only need two things to enter any building, my sonic screwdriver and my physic paper." The Tenth Doctor flashed the card before his pupils.

"Did that just say you're a vegan?" One girl nearly leapt from her set. "Me too!"

"NO! Pysch paper, very tricky thing. Need to focus on exactly what you want from it."

"And it BREAKS!" Eleven's shout echoed through the vents from the floor above. "Wouldn't even claim that I am a mature and responsible adult!"

Donna snorted. "If you're anything like Spaceman here, no wonder. You just use your tools so you don't have to think."

"OYE!" Ten exclaimed, nearly in unison with Eleven's cry of "That's really rude."

Damion, in the corner of the room, chuckled at the Doctors' indignant response.

"I got into that Adipose Industries building with only my wits. Just walk around like you know what you're doing, and nobody will stop you. "

"Just until you run into someone who knows that you aren't supposed to be there, and then this comes in handy," The Doctor concluded, waving his sonic triumphantly.

"But weren't talking about running a mission, were we? We were talking about getting into a building. What we do when we get there is another lesson." Donna crossed her arms. "Any questions?"

"One of the most important skills for an investigator—whether or not aliens are involved—is gaining access to areas that are not normally open to the public." Sarah Jane announced. "Stealth will get you into some places, talking into a few more, and a sonic device into most of the rest, unless there's a deadlock seal involved."

Evelyn eagerly scribbled notes.

"Now, give me an example of a location you would like to get into, and I'll talk you through it."

"The staff lounge!" Ashley blurted out.

"Nice try, but no." Sarah Jane smiled. "Any other suggestions?"

"The kitchens."

"The studios of the BBC during filming."

"Okay, let's go with that. How might you attempt to get in using stealth?"

"Walk in after one of the employees, carrying a stack of papers to look busy." Zoe offered.

"What might be some problems with this approach?"

"Card checks, getting lost, being discovered. I'd probably have better luck if I pretended to be from some organization wanting an interview." Sara tilted her head. "New media might be better—it's much easier to set up a Facebook page or blog than a newspaper."

Sarah Jane nodded. "It also helps if you have credible sources, but that's something you'll gain with experience. As for the final option, I hope you have all been practicing in the training area, because you will need to put those skills to use at some point."

"Really?" A buzz of excitement filled the room. "When?"

"I still need to discuss it with Esther and Grace, but I'll let you know when I have details."

Evelyn and Ashley joined Sara and Zoe as they filed out of the room. "A mission where we get sonics? How cool is that?"

"Just as long as we don't have to deal with Daleks. Slitheen are fine, and I wouldn't mind the slime at all."

"By the way, have you seen Icey recently? She didn't come with us to the training area the other day, and I think she skipped classes today." Zoe shook her head. "I'm a bit worried about her."

"Probably caught a bug or something. Some of that mash the Ood make is enough to turn anyone's stomach, but I suppose we should check on her at some point." Sara agreed. "But I have my classic session in fifteen minutes."

"I've heard some of you talking about physic paper." The Seventh Doctor peered down his nose at the class. "That's nothing. One time I snuck into a WWII military base. Solved a logical dilemma and forged the paperwork right under their noses." He paused for dramatic affect. "He accepted it."

"And then what?" Sara asked.

"Oh, lots of things. Fake vampires, blew up a church."

"Hey, Professor," Ace stuck her head in the door. "The TARDIS is making a funny noise."

"What did you do?"

"Well…I may have been working on some Nitro-9 that wasn't entirely stable."

"WHAT!" The Doctor grabbed his walking stick. "Right, I must be off! "

Amy Pond paused outside the door to the staff lounge. "That's some climb."

Esther huffed as she appeared at the top of the stairs, followed by Galadrile. "I should have told the Groske to install an elevator, but I had just watched 'Dalek,' so the elevator scene was still fresh in my mind." She pressed her palm flat against the scanner. "Mistress Esther and Amy Pond. "

The door slid open. Esther waved Galadrile through before it closed, and Amy brushed past them both.

"Hey, Leela, Ace, what's up?" Esther called.

"The Professor's off fixing the TARDIS," Ace gestured towards the one billowing smoke. "Just a small problem with the Nitro-9."

"What is this Nitro-9?" Leela looked up from sharpening her knife.

"It's an explosive to blow up enemies."

"All I need is my knife and janis thorns. The Saverteem believe weapons that kill at a distance are for cowards."

"You calling me a coward?" Ace sprang to her feet.

"Now, girls, let's not get in a fight." River Song appeared in the middle of the room, clutching her vortex manipulator. "In fact, I was just on my way to sort out a little mess in the Gamma Forests. Want to come along?"

"Sure, that'd be swell!" Ace exclaimed.

Leela nodded.

"Well, then, hold tight girls!" River took Ace's left hand, Leela's right, pressed them on the manipulator, and all three disappeared.

"Should I be worried about them?" Amy asked.

"That, Amelia Pond, is the question of the hour, isn't that? Why do people worry, anyway? Worrying never solved problems, never did anything except give some people a headache and bad dreams and maybe drove a few to suicide—the point is, why be worried? Hello, Pond."

"Hello, Doctor." Esther giggled.

"And Esther!" The Doctor kissed her on both cheeks. "How's the season going so far?"

"Fine. Two more episodes left, then we'll call an executive meeting on releasing 6a to the students. In fact, I was just on my way to see an episode now, so if you'll excuse me."

"Of course. Come along, Pond, there's this planet I absolutely have to show you. It's got multi-colored fireflies. On a summer night, it looks like a field of fairy Christmas trees, absolutely amazing."

Esther paused at the door to her TARDIS. By the way, Doctor, the kissing thing-it's not exactly a 21st century thing." But her lips held back a smile.

"Two doctors!" Esther exclaimed. "Can we all agree now that Captain Jack never learns of this?"

"Agreed!" Grace and Roheryn chorus in unision.

"Talking to yourself is a sign of insanity," Roheryn commented.

"Or genius!" Esther protested, but she accidentally grabbed Galadrile's wing instead of her glass of cold cider. "Youch!"

"Good, at least we know you aren't a ganger!" Grace teased.

"What would a ganger be doing here when we haven't even released The Impossible Astronaut yet?" Roheryn replied. "Anyway, shh, I want to hear this witty banter."

" Doctor, I am frightened. I'm properly, properly scared."

Esther grabbed Sejeaddy off the floor and held him close.

"Don't be, hold on. We're coming for you, I swear. Whatever happens, however hard, however far, we will find you."

" I'm right here. "
" No you're not. You haven't been here for a long long time."

"Doctor, what are you doing?" Grace yelled.
" Oh no. "

Amy exploded into a pile of goo. In one flash, she woke up in a tight iron room. The eyepatch lady was staring down at her.

"Well dear. You're ready to pop, aren't you? Little one's on its way. Here it comes. Push..."

"What!" all three girls exclaimed in unison. "That was a Ganger."

Someone knocked on the door.

"Who is it?" Grace yelled.

"The unit designated K5. I have news for the Mistresses. Companion Amy Pond is an imposter."

"We know that," Esther snapped. "But nobody else should. She's a Ganger!"

"I do not understand. But my sensors show that the life form that entered this lounge this afternoon does not match the DNA print of Amy Pond."