Well Doctor, as I was saying, you've had your chance and you've come up with absolutely nothing. Now, I-
[The technician cries in pain and drops to the floor]
Now don't touch him! Let me look...
[The Doctor moves the technician and reveals his hand is covered in black lines]
Charlie, and what's your name.. Ben, give us a hand to get him into the medical unit!
Try not to touch his skin.
[They both pick him up, and rush him to the medical unit. Hobson, Polly and The Doctor sit back down again. Then, The Doctor looks at the sugar container, with a look of realisation, then proceeds to knock the cup out of Hobson's hand just as he is about to drink the coffee.]
DON'T DRINK THAT! It's the sugar! Don't you see, that's why the disease doesn't affect everyone, it's the sugar! Not everyone takes it! Now don't touch it!...
[Polly and Hobson look at each other confused, as The Doctor picks up the sugar carefully with a piece of equipment and brings it to the lab.]
What are you doing?
Just be patient.
[The Doctor examines the sugar under a microscope, revealing the disease hidden inside]
Just as I thought. A large, neurotropic virus.
Like the space plague?
No. A large, infective agent that only attacks the nerves. That's why the patients have these lines on their faces and their hands. It follows the course of the nerves under the skin.
That's all very well, but how did it get in here?
Oh, it is the Cybermen. I believe they have deliberately infected the base.
My men have searched every square inch of the base, there's no space to hide a cat, let alone a Cyberman! Anyhow, how did they get in?!
[Everything goes quiet for a second]
One moment...
[The Doctor and co walk over to the medical room]
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