The next several minutes consisted of the Doctor running about, reading off of screens, and occasionally swearing in Gallifreyan. It was a while before he looked up and noticed that the little blond-haired girl, Luna Lovegood, was sitting on the floor, reading from a book that she had not been holding when she entered the TARDIS.
"Oi!" the Doctor called out, and Luna looked politely up at him with her big, batty eyes. "Where'd you get that?"
"Your library," she answered dreamily. "Do you know the hallway changes? I half-thought it was a wrackspurt-"
"A what?"
"...a wrackspurt, messing with my brain, but it wasn't. The corridors really change."
"Why were you in the corridors? Do you know the sorts of things that come out of corridors?"
Luna waved the book in the air demonstratively.
"No, I mean besides that-"
"What are you doing?" the girl digressed, tucking the book under her arm and getting to her feet.
"I'm trying to find someplace to land us that won't result in a time paradox or a Dalek attack...Don't touch anything!" he added as Luna neared the controls. She obediently folded her hands behind her back, book tightly clasped.
"I don't think you're doing a very good job," she confided.
"Yes, I know that! Thank you!"
The TARDIS gave another lurch, sending both girl and Doctor tumbling to the floor. Both were up again soon enough. Luna, after locating her borrowed book on the floor, cracked it open again and strode out of the Doctor's line of sight. He was honestly too distracted to stop her.
"Mr. The Doctor!" her voice called out. "Sir, I think you should try this lever."
"What lever?"
"Over here. This book says-"
The TARDIS gave yet another lurch...or, well, sort of a half-lurch. It started to lurch, and then it unexpectedly righted itself and started sailing swiftly towards some unknown destination.
"What?" the Doctor said aloud.
"Sorry," came the girl's voice from somewhere on the floor. "I touched something."
"What did you do?"
"Well, I was pointing at the lever and the TARDIS moved..."
"What lever?" the Doctor hurried over and helped the girl to her feet. Her eyes were impossibly bright.
She pointed out the lever that she had accidentally pushed. "Maybe the TARDIS wanted me to push it."
"The TARDIS-?" The Doctor was surprised. Most companions didn't immediately decide that the TARDIS was capable of conscious decision.
Not that this girl was a companion.
Still, all the same...
Luna continued: "Well, it sent me to the library, helped me find this book, and then it made me push the lever."
The Doctor placed a soothing hand on his TARDIS. "What are you doing, old girl?" he murmured to it.
He received no answer; instead, they slammed to a halt.
The Doctor opened the TARDIS door warily. The outside seemed safe enough- a cobblestone pathway between rows of warm-looking shops and taverns. He stepped out, slipping his hand into that of the small girl, who followed curiously behind him.
"Out you go...I don't suppose this is Diagon Alley?"
The girl shook her head.
"Don't suppose you have any idea where this is?"
She shook her head again. "Can't you find all that out?"
"Of course!" He released her hand in order to ruffle her hair before taking off at a run toward the nearest tavern.
Luna's expression turned contemplative, and she turned to reenterer the TARDIS.
"Come on then, Lovegood!" the Doctor called.
"I'm going back to the library!" she answered back. "Maybe the TARDIS has another book for me!"
"Right, then! Just stay where you are once you get there." He disappeared around a corner, then.
Luna turned on her heels and found that somebody had shut the TARDIS door, and it was now tightly locked once more. "Mr. The Doctor?!" she called out, then turned around another ninety degrees to find her path blocked by a man in a black trenchcoat and top hat.
"The Great Intelligence has need of you," the man droned, reaching for her as though he planned to sieze her head like a crystall ball.
Luna looked around and found herself entirely encircled by other men in trenchcoats, although the others lacked faces.
Trapped again. She was back to square one.