They say war is the darkest part of any civilisations history...but sometimes there are worse things.
Prologue
Jack listened in horror as the words of the massed soldiers rang round the temple. He watched with fear rising in his stomach as the Doctor turned his attention to him.
Well, it looked like the Doctor but that was all; the lights were on but the wrong occupant was at home.
"Captain Harkness," the Doctor's voice hissed at him, but there was no warmth in the tone of it. "You have become a problem that will have to be dealt with."
The Doctor or whatever had inhabited the Doctor closed the gap between himself and Jack. Jack stared into those lifeless eyes and knew he was staring into a deep abyss of nothing.
"It would be a thrill to kill you," the thing inhabiting the Doctor said. "But since you would only come back and plague me, it would be a waste of my time. So you will be allowed to live. But I cannot have you here, this body struggles too much with you still present. I think perhaps you should return to that little speck of dust you called Earth. You have six month of your time, six month to prepare your little world...no your little galaxy for my arrival. Let them know Captain Harkness, let them know their new God is coming."