"Well," he put on his black rimmed glasses and leaned forward to closely read the screen. "This is something I haven't seen in a long, long time! Oooh aren't you a beauty! Ancient species, nearly extinct, vampiric, REAL vampires! Well, its more like a parasite really, but its difficult to spread. Almost impossible really. It's been tried on humans before but didn't work so why is it working now? What's changed? Hmm, this must be some kind of mutation, oooh this isn't good. Not good, No, no, no. Well we have to go and take a look at this! What do you-" He whipped around, "say?" His smile fell, he forgot again. He blinked several times, his dark eyes stung. The Doctor was alone.
He slowly removed his glasses and slipped them back into the breast pocket of his brown, pinstriped jacket. It had been about a month since the Doctor had left Donna back in the care of her family. A month since he had taken away everything that had made her into the most important woman in the universe. Everything that had made her the best friend he had ever had. He cleared his throat and continued reading the data on the screen in silence other than the ambient noise of the TARDIS. This particular alien parasite had been present on Earth for years, and the Doctor was aware of it, but to his knowledge it had never been able to infect a human.
"I guess I was wrong. All it takes it one person, ONE person with a specific genetic composition that lets the parasite take hold. But why come out of hiding now? What are you up to?" The Doctor asked the hum of the TARDIS control room. The screen bleeped and blinked a string of queried results. "Oh no. Can't be." The Doctor's brow furrowed in as he read on. A string of murders and disappearances with whispers of vampires in several small towns dotted across America.
"Oh no you don't." The Doctor skimmed through the query results, his finger tracing the data then tapping the screen when he located the most recent murder. A miniscule, mountain town in Montana called Golly. "Golly is right," he mumbled as he entered the coordinates of the town. He picked a spot about a quarter mile location right outside a small residential area and set down the TARDIS.
After talking to a few of the residents, the Doctor was able to get the addresses of a few newcomers to the neighborhood. The first house was a newly married couple, the second was a man and his two sons, and the third resident was not home. The Doctor pulled out his sonic screwdriver and quickly scanned the vicinity. "Nothing. Hmm. Then why do I get the feeling that there is something -"
"Hello?" called a woman's voice from the house next door. The Doctor dashed around the corner of the vacant house, diving into a large, flowering shrub. He thought it best to remain hidden just in case he needed to question this neighbor under less suspicious circumstances later on. The Doctor waited until he heard her front door close and peeked around the corner. The coast was clear.
"Close one!" He resumed his scanning only this time, there was something. The hairs on his neck stood up and his skin prickled. His hearts started to beat faster and his breathing became rapid. Before he knew why, the Doctor found himself running. He ran until he reached the outskirts of the neighborhood and came to a stop. The overtaking sense of terror that had come over him had waned and was replaced with confusion.
"What was -" the Doctor stopped, trying to catch his breath. He began to pace around, running his hands furiously through his hair, his long coated whipping back and forth. "Well! I guess I found what I was looking for! Let's see what I got on my scan, Allons-y!" He grinned and beckoned, but there was no one. He had forgotten again.