A/N - I'm realizing that this book may be the longest one so far purely because of the amount of specials in this series.

The TARDIS landed and they stepped out.

A big mansion stood near them.

"Please tell me we're not going to explore the big scary house," Elise said.

The Doctor gave her a look.

"We're going to explore the big scary house, aren't we?"

The trio walked up to the door and knocked.

A man opened the door and the Doctor jumped out.

"Boo! Hello, I'm looking for a ghost."

"And you are?"

Clara appeared at his side. "Ghostbusters."

Elise rolled her eyes at the dumb joke.

"I'm the Doctor," the Doctor said, holding up his psychic paper.

"Doctor what?" the man asked.

"If you like. This is Clara and Elise." He walked over to the table filled with equipment. "Ah, but you are very different. You are Major Alec Palmer. Member of the Baker Street Irregulars, the Ministry of Ungentlemanly Warfare."

He leaned in towards Palmer and whispered, "Specialized in espionage, sabotage and reconnaissance behind enemy lines. You're a talented watercolorist, professor of psychology and ghost hunter." He shook Palmer's hand. "Total pleasure. Massive."

"Actually, you're wrong. Professor Palmer spent most of the war as a POW," the woman with him said.

"Actually, that's a like told by a very brave man involved in very secret operations. The type of man who keeps a Victoria Cross in a box in the attic, eh? But you know that, because you're Emma Grayling, the Professor's companion." The Doctor gave her air kisses.

"Assistant."

"It's 1974. You're the assistant and "non-objective equipment". Meaning psychic."

"Getting that. Bless you, though," Clara said.

"Relax, Emma. He's Military Intelligence. So, what is all this in aid of?" Palmer asked.

"Health and safety. Yeah, the Ministry got wind of what's going on down here. Sent me to check that everything's in order," the Doctor told him.

"They don't have the right."

"Don't worry, governor, I'll be out of your hair in five minutes." The Doctor excitedly pointed at the equipment. "Oh! Oh, look. Oh, lovely. The ACR 99821. Oh, bliss."

Elise chuckled lowly. "You're such a nerd."

The Doctor messed with the toggles. "Nice action on the toggle switches. You know, I do love a toggle switch. Actually, I like the word toggle. Nice noun. Excellent verb."

Clara reached down to touch something and the Doctor slapped her hand. "Oi, don't mess with the settings." The Doctor scanned the area with his screwdriver.

"What's that?" Palmer asked.

"Gadget. Health and safety. Classified, I'm afraid. You know, while the back room boffins work out a few kinks."

"What's it telling you?" Emma asked.

"It's telling me that you haven't been exposed to any life-threatening transmundane emanations. So, where's the ghost?" The Doctor picked up a candelabra. "Show me the ghost. It's ghost time."

The group followed the Doctor down a dark corridor, with only the light from the candelabra to light their way.

"I will not have this stolen out from under me, do you understand," Palmer told them.

"Er, no, not really, sorry," the Doctor said.

"I will not have my work stolen, then be fobbed off with a pat on the back and a letter from the Queen. Never again. This is my house, Doctor, and it belongs to me."

"This is actually your house?" Clara asked.

"Why would you want to live here?" Elise asked.

Palmer ignored Elise's question and answered Clara's.

"It is." Clara laughed.

"Sorry. You went to the bank and said, you know that gigantic old haunted house on the moors? The one the dossers are too scared to doss in? The one the birds are too scared to fly over? And then you said, I'd like to buy it, please, with my money."

"Yes, I did, actually."

Clara crossed her arms over her chest. "That's incredibly brave."

Elise rolled her eyes. "Or stupid."

Clara hit her on the arm.

"What? It is!"

There was a loud creaking noise.

"Listen, Major, we just need to know what's going on here," the Doctor told him.

"For the Ministry."

"You know I can't answer that."

"Very well, follow me."

Major Palmer led them into a living room. It was much warmer than the rest of the house and it looked almost livable.

"So, what's an empathic psychic?" Clara asked Emma.

"Sometimes I sense feelings, the way a telepath can sense thoughts. Sometimes, though. Not always."

"The most compassionate people you'll ever meet, empathics. And the loneliest. I mean, exposing themselves to all those hidden feelings, all that guilt, pain and sorrow and..."

Elise elbowed the Doctor. Shut. Up.

The Doctor gave her a light glare as he rubbed his side.

"Would you care to have a look?" Palmer asked.

They approached a board covered in pictures.

"Caliburn House is over four hundred years old, but she has been here much longer. The Caliburn Gast. She's mentioned in local Saxon poetry and parish folk tales. The Wraith of the Lady, the Maiden in the Dark, the Witch of the Well."

"Is she real? As in, actually real?" Clara asked.

"Oh, she's real. In the seventeenth century, a local clergyman saw her. He wrote that her presence was accompanied by a dreadful knocking, as if the Devil himself demanded entry. During the war, American airmen stationed here left offerings of tinned Spam. The tins were found in 1965, bricked up in the servants' pantry, along with a number of handwritten notes. Appeals to the Gast. For the love of God, stop screaming."

Elise rolled her eyes and scoffed.

Both Clara and the Doctor gave her a look.

"She never changes. The angle's different, the framing, but she's always in exactly the same position. Why is that?" Clara asked.

The Doctor picked up the candelabra.

"We don't know. She's an objective phenomenon, but objective recording equipment can't detect her..."

"...Without the presence of a powerful psychic," the Doctor finished.

"Absolutely. Very well done."

Emma gasped. "She knows I'm here. I can feel her calling out to me."

"What's she saying?" Clara asked.

"Help me."

"The Witch of the Well. So where's the well?" the Doctor asked.

"A copy of the oldest plan that we could find. There is no well on the property. None that we could find, anyway."

The Doctor tapped Clara on the head, making her jump and turn around. "You coming?" he asked her softly.

"Where?"

"To find the ghost."

"Why would I want to do that?"

"Because you want to. Elise is coming."

"Only because if I don't, you'll get yourself into more trouble," Elise snapped.

"Come on," the Doctor told Clara.

"Well, I dispute that assertion."

The Doctor and Elise started for the exit. "Eh? I'm giving you a face." The Doctor jerked his head towards the dark corridor. "Can you see me? Look at my face." He jerked his head again.

"Fine." Clara walked towards them. "Dare me."

"I dare you. No takesies backsies?"

Clara bit her lip and shook her head, before taking the candelabra and leaving.

The Doctor chuckled and turned to follow after her when Emma said, "The music room is the heart of the house."

"Say we actually find her. What do we say?" Clara asked as they walked down yet another dark corridor.

"We ask her how she came to be whatever she is," the Doctor said.

"You don't actually believe all this do you?" Elise asked.

"What makes you say that?"

"Out of all the adventures we've ever had, we've never once run into an actual ghost. Why would they start being real now?"

"This regeneration is very practical. Did you know that?"

Elise shrugged. "Blame River."

"Getting back to the point," Clara said, "Why?"

"Because I don't know, and ignorance is, what's the opposite of bliss?"

"Carlisle."

"Yes. Yes, Carlisle. Ignorance is Carlisle."

They eventually came to the music room.

"Ah, the music room. The heart of the house. Do you feel anything?" the Doctor asked Clara.

"No."

"Your pants are so on fire." Clara giggled.

"Elise, anything?"

Something wasn't right, but she couldn't put her finger on it. "Maybe."

The Doctor's screwdriver started malfunctioning.

"Do you feel like you're being watched?" Clara whispered to the Doctor.

"What does being watched feel like? Is it that funny tickly feeling on the back of your neck?"

"That's the chap."

"Then yes, a bit. Well, quite a big bit."

The wood around them creaked.

"I think she's here," Clara said.

The Doctor stepped out of the room and then back in. "Cold spot. Spooky." He started walking around the cold spot. "Cold. Warm. Cold. Warm. Cold. Warm. Cold. Warm. Cold." The Doctor drew a circle around the cold spot.

"Doctor?" Clara asked, "Doctor!"

"What?"

"I'm not happy."

"No."

The Doctor walked out of the room and Elise ran after him.

It took Clara a few seconds to realize the two Timelord's had left her. "Hey!"