[This fic was inspired by the AO3 collection Doctor Who Crossover Christmas Challenge, a year too late.]
David Vincent ran frantically through the forest, his blue eyes darting left and right for a hiding spot or an opportunity to turn the tables on his pursuer. As gunshots cracked behind him, he stumbled and fell, but quickly scrambled back to his feet and redoubled his efforts to evade his enemy.
Out of place between trees sat a blue British police box. A bit further away, the Doctor, Yasmin Khan, Ryan Sinclair and Graham O'Brien strolled through the woods, taking in their surroundings.
"Fifty years in the past, USA, Vermont. A forest near a town called Essex Junction," the Doctor was saying.
"Fifty years, exactly?" Graham asked. "Is today supposed to be an anniversary or something?"
The tall blonde woman smiled. "Not that I know of. But you know the Tardis, she has a mind of her own."
"1968, that's the year Martin Luther King was assassinated," Yas pointed out. "There was still a lot of racism. Do you think Krasko's at it again?"
"Doubt it," the Doctor answered, shaking her head. "Nothing special happens in Essex Junction in autumn 1968."
Ryan's warning interrupted their reflections: "Guys, gunshots." He pointed towards a steep slope going up ahead of them. "Coming from over there."
David was forced to slow down when he reached a drop before him, and he dashed behind a bush, the only cover he could find. His pursuer soon reached the position, gun in hand. As he was distracted by the voices coming from downwards, David leapt at him and threw a solid punch.
The man let out a groan of pain but raised his gun again. With the experience born from years of fighting and the rage of survival, David grabbed his arm and forced it around. The struggle was brief until, in the confusion of the fray, the gun went off and hit its owner in the chest. David immediately let go; mortally wounded, his opponent stumbled back and fell down the slope.
Before the dumbfounded eyes of the four travellers, the man glowed an incandescent red and burned up, and after a few seconds, only a discreet scorch mark on the soil remained.
"What was that," Yas voiced what they were all thinking.