Rose:

I decided Donna would like a change from alien encounters, so I took her to the 1920's. 1926 to be exact. Right when we stepped out of the TARDIS we were thrown into an adventure.

It started with the killing of Professor Pietsch in the library with a lead pipe. If the situation wasn't so serious I would've laughed at the irony.

Arriving in the garden, we first met Lady Eddison, the host of a party we were attending. Donna attempted an English Nobility accent, and failed just as you did at a Scottish one back when we met Queen Victoria.

The first clue we had was the rumor of "the Unicorn", a jewel thief who had been lifting jewels all over England. But then the guests started streaming in and we had other things to focus on.

Roger Curbishley, Davenport, Ms. Redmond, Colonel Hugh, the Reverend Golightly, and finally, Agatha Christie filled out the guest list. Donna was so excited to meet Agatha. I was amazed as well, I am a huge fan of her books. She fooled me once, but it was a good once.

I noticed the date from a newspaper; we had landed the day before Agatha Christie disappeared in history. She discovered her husband had an affair with a younger woman. The next morning her car was found by a lake side and she vanished for ten days. Agatha then appeared in front of the Harrogate Hotel with no recollection of what had happened.

But before I could dwell on the possibilities, we were called to the scene of the crime.

I knew I had to question all the guests who had attended the party, as they were the most likely suspects.

I found morphic residue by the Professor's head. I knew right away that an alien had killed Professor Peach-no...Pietzsch. Donna couldn't believe it.

Donna also mentioned how impossibly ironic it was to have a mystery and Agatha Christie, she said it was like meeting Charles Dickens and ghosts at Christmas...I let that one pass!

All the guests seemed to have alibis:

The Reverend had been unpacking in his room.

Robert had been in the garden alone.

Davenport was in the washroom, preparing herself for the party.

Sir Robert was in his study, reading.

Lady Edison was taking her tea in the blue room.

All the alibis were faulty.

I noticed Agatha had removed an item from the fireplace when she thought I wasn't looking. It was a piece of paper with the word 'Maiden' written on it. The game was afoot!

Meanwhile, Donna discovered a room that had been sealed off for years. She was attacked by a giant wasp while poking around in it. But it disappeared before I could see it, leaving it's stinger in the door, looking more like a huge spike.

Before we knew it another murder occurred. A woman lay crushed under a statue. "The poor little child" were the head housekeeper's last words.

I caught a glimpse of the wasp above the kill. But I lost it's trail. The plot was thickening.

It was a vespiform. A creature that could change it's appearance.

Donna and Agatha discovered a case hidden in the bushes beneath one of the windows. It was filled with the tools of a thief.

While I was pondering the mystery, Greeves brought us our drinks. I was parched.

Very quickly I realized I had been poisoned! By sparkling cyanide to be exact. It was very painful. Painful and embarrassing. Embarrassing because I remembered the key to healing myself by doing a detox: Ginger beer, some kind of protein, something with salt, and a shock. Donna and Agatha provided those with walnuts and anchovies. Donna provided the shock as well. I won't go into details but it worked. Now looking back at the memory of Donna and Agatha helping me with the antidote, it actually was quite humorous.

That night at dinner, I slowly pieced the facts together. I had a plan to discover the wasp. Suddenly the lights went out, and someone screamed. When the lights came back on, Roger lay slumped in his chair, murdered, and Lady Edison's necklace "the Firestone" was gone. Stolen.

I later discovered that I was looking at the facts all wrong. Agatha Christie was really the one who could solve the mystery. I knew we would find the killer soon using her expertise.

Agatha laid the facts out clearly.

Miss Redman had proven to be an imposter. She was the Unicorn, and had stolen the Firestone. But she wasn't the Vespiform.

The Colonel was innocent, although he had been lying about being stuck in a wheelchair to keep his lady by his side.

Lady Edison had also been hiding something. Many years before, she returned from India, with the Firestone and pregnant with a Vespiform's child. But she wasn't the murderer either.

The final piece was put in place. The Firestone had been used as a telepath recorder between the Vespiform and Agatha's books as Lady Edison was reading them. At the same time, the Reverend discovered his true form for the first time.

That's right, the Reverend was the Vespiform, son of the Lady Edison, given away as an orphan to the church years before. The Vespiform and the telepath activated at the same time. Christie's books became a template for his brain.

When all was revealed, the Reverend became angry and reverted to his new form. He chased Agatha Christie down to the lake in her car. We followed them, racing down the dark road. To save Agatha, Donna threw the Firestone in the lake and diving after it madly, the beast was drowned.

But Agatha's mind was connected to the stone. I thought she was going to die, but at the last moment, the wasp let her go, it's final act.

We delivered the amnesiac, Agatha Christie, to the front of the Harrogate Hotel the next morning to preserve history and made our departure.

But her books, they truly do live on forever. She may have forgotten Donna and I, but her books are around even in the year 5,000,000,000 A.D.! She was the best-selling novelist of all time!

Well that was enjoying to write. It was an exciting time. I wish you could've been there, you would've enjoyed this one. You would've enjoyed all of them. I think of you every day.

-In My Hearts Always-

Your Doctor