A/N - Welcome to the new year, my lovely Whovians! I will try to update frequently again, but I start a new job and two new classes. I have weekends off now, so that's a perk.

They entered a small room with red walls and fake marble columns.

Elise knew they were fake because she'd seen real ones on an archeological trip with River.

The doors closed behind them.

"Deposit booth locking. Please exhale. Your valuables will be transported up from the vault."

Saibra breathed into the tube. It turned green as Saibra transformed back into herself.

A case appeared.

"If he can break in here and plant this thing, then why does he need our help?" Saibra asked.

"Depends what the thing is," the Doctor told her. He opened the case. "Okay, well, I'm no expert, but fuses, timer. I'm going to stick my neck out and say bomb." He turned to Psi. "Bank schematic. Now."

Psi walked over to one of the columns and plugged himself in.

A screen appeared with the schematics.

"The floor below is all service corridors, the veins and arteries of the bank," the Doctor said. He tapped the center of the room with his foot. "He wants us to blow through the floor."

"Well, we'll die if we do that," Saibra told him.

"Well, not necessarily. There must be a plan."

"What if the plan is, we're blowing up the floor for someone else? What if we're not supposed to make it out alive?" Clara asked.

"Oh, don't be so pessimistic. It'll affect team morale," the Doctor said.

"What, and getting us blown up won't?" Saibra asked.

"Well, only very, very briefly."

"Er, no. No way. You can do you what you like. I'm going to take my chances out there," Psi said, heading for the door.

"Psi," Clara told him.

"No, no, no. This guy, your mate, is a lunatic."

"What do you want, Psi, more than anything else? Whatever it is, it's in this bank. You agreed to rob the most impregnable bank in history. You must have had a very good reason. We all must have. Picture the thing you want most in the universe, and decide how badly you want it. Well?"

"Still don't understand why you're in charge."

"Basically, it's the eyebrows."

Clara nodded as the Doctor placed the device from the case in the middle of the floor. Clara grabbed Elise's hand and pulled her towards the wall as they waited.

The bomb went off and created a hole in the middle of the floor.

"Are you sure that's a bomb?" Elise asked her father, her arms crossed over her chest.

"Am I sure it's a bomb?" The Doctor picked it up. "It's a dimensional shift bomb, Elise. Sends the particles to a different plane. Your boy-toy would love this. Come on then, Team Not Dead." The Doctor jumped in the hole.

"My what?" Elise asked.

"Oh get in."

They each climbed down into the hole and the Doctor placed the Dimensional Shift Bomb above them. The hole closed up.

"Well, so, what are we supposed to do now? What's the plan?" Saibra asked as they walked through the basement.

"I don't know. The Architect set all this up. It should make sense. My personal plan is that a thing will probably happen quite soon," the Doctor said.

"Ah, so that's it. That's your plan?"

"Yep."

"A thing will happen?"

"A thing. Probably."

Clara looked around and spotted a case. "Hey, Psi. Doctor."

"There you go. Thing time," the Doctor said, climbing down a ladder.

"How does he get the cases here?"

"By breaking into the bank in advance of breaking into the bank."

"Well, how did he do that? And if he can do that, why does he need us?"

"Not our problem."

"Well, what is our prob-prob-prob-prob-pr?" Psi stuttered.

"You okay?" Clara asked.

"Yeah, are you short circuiting or something?" Elise asked.

"Drive glitch. It's fine," Psi told them.

"Guilt is our problem. Guilt, in this bank, is fatal. The Teller can hear it. Ever since that first case was opened, we've been targets. The more we know about why we're here, the louder our guilt screams. That's why we wiped our memories. For our own safety. Now, once I open this, I can't close it again," the Doctor said.

"Would it be safer if only one of us learned it?"

"I'm waiting for you to volunteer."

"Er, why me?"

"Because you didn't need that memory worm, did you? You're half-computer. You can perform a manual delete. You can clear your thoughts."

"Okay." Psi opened the case. "I don't know what it is. You may as well have a look. Well, what are they?"

In the case sat six tubes with pins that could be pulled on top. Like cylindrical grenades.

"Not a clue," the Doctor said.

"Hmm, interesting," Saibra remarked.

"What is?"

"You're lying."

"Er, why would he be lyi-lyi-lyi-lying? Ugh. Sorry. Stress. Drains the batteries," Psi said.

"Interface with this," the Doctor told him, pointing to a console on the wall.

"Do we have time for this?" Saibra asked.

"Well, why not? There's no immediate threat."

An alarm started going off. "Warning. Intruders detected."

Elise looked at her father who sighed.

"I know. I should stop saying things like that."

"Intruders detected."

"Clara, Elise, you stay with Psi. Saibra, let's go and investigate."

The Doctor looked at Elise, who nodded. I'll be okay. Go.

The Doctor nodded back and left with Saibra as Psi plugged himself into the console. He pulled off one of his chips and blew on it. "Oh. Storm dust."

"You can delete your memories?" Clara asked.

"Yeah, it's not as fun as it sounds."

"I've got a few I wish I could lose."

"And I lost a few I wish I hadn't. No, I was, I was interrogated in prison. And I guess I panicked. I didn't want to be a risk to the people close to me, so..."

"You deleted your friends?"

"My friends, anyone who ever helped me, my family."

"Your family?"

"Of course my family."

"How could you do that?"

"Well, I don't know." Psi sighed. "I suppose I must have loved them."

Elise reached over and put her hand on his arm. "I'm sorry you had to do that." Elise didn't know what she'd do if she couldn't remember her father, Amy, Rory, River.

Once Psi was fully charged, they caught up with the Doctor and Saibra. They were standing in front of a row of cells.

In one of them was the man from earlier.

"Oh, my God. Why is he even still alive?" Clara asked.

"I don't know. But someone is watching."

A camera with a blinking red light sat above him.

"Doctor. However this goes, whatever happens, don't let me end up like that," Psi said.

An alarm started going off. "Intruders on the service level. Intruders on the service level."

The Doctor ran over to a service duct and sonicked it. "Now this says place to hide."

They crawled through into a room.

The creature from earlier was inside a glass case. It screeched.

"Nobody move. Nobody say a word. It's cocooned. Forced hibernation. Its power is probably dormant," the Doctor told them.

The creature moved as they heard boots and voices.

"Clara. It's locked on to you. It may still be asleep. Don't wake it," the Doctor said.

"Okay. How do I not do that?"

"Keep your mind blank. Block everything. Once it locks onto your thoughts, it won't let go."

The creature growled as Clara closed her eyes.

"It's waking up. Keep blocking your thoughts, Clara. Don't think."

The creature roared.

"This way!" Psi said, running back towards the duct, "Saibra!"

"She's still in there. How do we get her out?" Clara asked.

"It's scanning her brain," the Doctor said.

"Then what?" Psi asked.

"Soup."

"Then help her," Clara said.

Saibra called out in pain.

The Doctor crawled out into the room. "Saibra," the Doctor told her.

"What should I do? How can I get away?"

"It's rooting through your brain. It's tasting all the secrets stashed inside. Any moment now, it will finish its sweep and start feasting on what's left."

"And then I become one of those things we saw sitting in a cage?"

"Yes."

"Can you not get me out?"

"I'm sorry. I don't know how, once it's locked onto your thoughts."

"Exit strategy. That means what I think it means, right?"

The Doctor held out one of the tubes. "Atomic shredder."

"Painless?"

"And instant."

"When you meet the Architect, promise me something. Kill him."

"I hate him, but I can't make that promise."

"A good man. I left it late to meet one of those." She used the shredder and vanished in a bright blue light.

The creature roared once he realized she was gone.

"How could you just let her die?" Elise's soft voice asked. At least she wasn't yelling this time, but the Doctor could see the pain in her eyes.

"I'm sorry, Elise. But I couldn't save her."

Clara rubbed the redhead's back to try and comfort her.

"Come on. We need to keep moving," the Doctor told them.