After meeting Robina Redmond, the supposed hit of the social scene, and Agatha Christie, THE Agatha Christie, the Doctor, Donna, and Emma skirted off to the side of the conversation and talked amongst themselves.
"She'd just discovered her husband was having an affair." The Doctor held a newspaper in his hands. Inside his vast mind he was able to tell, from the date and headline on the paper, that this was going to be a very traumatic day in the life of Agatha Christie.
"Poor girl." Emma looked at Agatha, her soft face and baby blue eyes made her look ravishing in her dress.
"You'd never think to look at her. Smiling away." Donna said.
"Well, she's British and moneyed. That's what they do. They carry on. Except for this one time. No one knows exactly what happened, she just vanished." The Doctor holds the newspaper up so that Emma and Donna can see the headline; Mystery Writer Disappears, "Her car will be found tomorrow morning by the side of a lake. Ten days later Agatha Christie turns up in a hotel in Harrogate. Said she'd lost her memory. She never spoke about the disappearance till the day she died, but whatever it was."
"It's about to happen." Donna finished.
"Right here, right now." The Doctor said.
"Professor! The library! Murder! Murder!" Mrs. Chandrakala, a woman who had worked for Lady Eddison for years ran out of the library screaming in fright.
"Oh, my goodness." Greeves loomed over Professor Peach, a guest at the party.
"Bashed on the head. Blunt instrument. Watch broke as he fell, time of death was a quarter past four." The Doctor and Agatha looked over the disheveled body of Professor Peach.
"Bit of pipe." Donna lifted a lead pipe off of the floor, "Call me Hercule Poirot, but I reckon that's blunt enough."
The Doctor searched through the papers on the desk, "Nothing worth killing for in that lot, dry as dust."
"Hold on. The body in the library?" Donna grinned, "I mean, Professor Peach, in the library, with the lead piping?"
The rest of the party shuffled into the room making gasps of horror.
"Let me see." Lady Eddison pushed through to the front of the crowd.
"Out of my way!" Colonel followed Lady Eddison.
"Gerald!" Lady Eddison exclaimed.
"Saints preserve us!" Reverend, from the church that was robbed by the unicorn, said.
"Someone should call the police." Agatha said.
"You don't have to." The Doctor pulled out his psychic paper, "Chief Inspector Smith from Scotland Yard. Known as the Doctor. Emma's my wife and Miss Nobel is the plucky young girl who helps me out."
"I say." Lady Eddison examined the psychic paper.
"Go to the sitting room. I will question each of you in turn." The Doctor commanded.
"Come along do as the Doctor says. Leave the room undisturbed." Agatha ushered the guests out of the library. Donna followed behind them.
"Did you just call Donna the plucky young girl who helps you out?" Emma and the Doctor knelt down beside Professor Peach.
"No policewomen in 1926." The Doctor said.
"Shouldn't we phone the real police."
"Well the last thing we want is PC Plod sticking his nose in." Slime on the floor caught the Doctor's attention, "Expecially now I've found this! Morphic residue."
"How unsanitary." Emma watched the Doctor scrape slime off of the floor with a stick.
"It's left behind when certain species genetically re-encode."
"The murder's an alien."
"Which means, on of that lot is an alien in human form."
"Yeah, but think about it. There's a murder, a mystery, and Agatha Christie."
"So? Happens to me all the time." The Doctor puts the slime close to Emma's face so she could smell it.
"No, but isn't that a bit odd? Agatha Christie didn't walk around surrounded by murders. Not really. I mean that's like meeting Charles Dickens, and he's surrounded by ghosts. At Christmas." Emma said as the Doctor tasted the morphic residue.
"Well…"
"Oh, come on! It's not like we could drive across country and find Enid Blyton having tea with Noddy. Could we? Noddy's not real. Is he? Tell me there's no Noddy!"
"There's no Noddy." The Doctor looked skeptically at Emma, "How do you know who Noddy is?"
Emma blushed.
"Doctor?" Donna peeked her head in the doorway, "Your suspects are getting restless."
"Donna, you search the bedrooms. Look for clues, and look for residue of any kind." The Doctor dug into his inside coat pocket and pulled out a magnifying glass, "You'll need this."
"Is that for real?" Donna asked incredulously.
"Go on. You're ever so plucky." The Doctor said.
Donna went up the stairs, with a disdained look on her face.
"Perhaps we should go question the suspects." Emma offered.
"Perhaps." The Doctor looked at the red and silver knee length dress that Emma adorned. He put a hand on the small of Emma's back and pulled her close. He kissed her on the lips and she wrapped her arms around his shoulders.
"Doctor," Emma pulled away, "Professor Peach."
The Doctor looked at the body that hadn't moved from its spot on the floor.
"Right." He led Emma out of the library and into a room across the hall.
The Doctor shut the door and held Emma against it while he kissed her.