Tempus Bellum

Summary: On the morning of his 17th birthday, Harry Potter awakes to find a very mysterious letter and parcel among his belongings, what happens next could risk the fate of the world…

A/N: I do not own Harry Potter or Doctor Who. But hat's off to J.K and erm… the B.B.C…Takes place post HBP. –HOWEVER- The idea of Horcruxes in this universe are non-existent. (and no I'm not explaining why or how.)

Prologue: Out of Sight, Out of Mind

James Potter was slowly falling asleep. He and his wife Lily had been running from a certain Dark Lord for a little over two years. They were looking for a way to defeat him once and for all but had exhausted their resources. So when their son was born, they decided to go into hiding.

James was, well, a regular guy. But there were times where he would… act strangely… around certain areas or people. James remembered once when he went round muggle London after a trip to Diagon Alley…

He was walking through the Isle of Dogs when it happened. James was glad he was with Sirius because he suddenly felt light-headed. Images of strange metal men and dustbin like objects were swimming in front of his eyes. Grabbing his friend's collar he sank to his knees.

"Oit James, what you playin' at mate?" his friend asked, a look of annoyance in his eyes.

"Wha…what? Oh… sorry I felt light headed for a sec." James replied standing once more.

James was abruptly shaken from his thoughts as an almighty boom echoed through the house.

"JAMES!! HE'S FOUND US!" Lily cried rushing towards the stairs.

"LILY, GET HARRY, I'LL STAY HERE AND HOLD HIM OFF."

"JAMES YOU CAN'T!"

"I'M NOT ARGUING NOW GO!!"

With that James drew his wand and motioned Lily to make sure Harry was safe.

Running towards the front of the house James suddenly felt dizzy.

"Ah… 'Potter' at last I have found you." The cold shrill voice of Lord Voldemort rang out. "I shall once and for all end this… multi lifelong battle."

"What are you talking about?" James spat.

"Oh yes, human. I'd almost forgotten. No matter, this ends tonight."

"What on Earth are you on about?" James screamed.

"What on Earth? Hmmm, this human version of yourself really doesn't do you justice." Voldemort sneered.

"However, as I said this no longer matters. You were a worthy opponent, I'm almost sad that this has come to an end…"

Before James could react, he was hit in the chest by a green orb of light.

As Voldemort stepped over James' dead body he whispered into his ear.

"Goodbye… Doctor."