'And now, Potter,' Voldemort spat, 'You either surrender the information or I shall fight you for it!'
'I will never-'
Harry blinked. There was something different. Probably that MAN stood in between them. He seemed to be pressing something on his wrist-strap. He looked up. Blinked.
'Captain Jack Harkness. And who are you?'
'Avarda Kadarva!'
The man fell to the floor.
'No=one Flirts with Lord V-'
'Well that was a harsh welcome.' Voldemort spun around, and Harry peered 'round him. the man, Captain Jack, stood up breathing.
Voldemort took a step back. 'But... How!'
Jack replied, 'Don't stress, only one person knows how the physics work, and he conveniently deserted me.' Jack looked away. He looked angry.
'Avarda Kadarva!'
Again, Jack fell to the floor. then he just sat right back up. 'Wow. way to make a guy feel welcome.' He snarked.
'Avarda Kadarva!'
And back again. 'Seriously, how are you doing this?'
Voldemort snarled. 'Filthy Muggle. Why Can't I kill you? This spell Has never failed me before!'
Jack snarled right back. then just sauntered towards Harry, and untied him. Harry rushed out the door, completely missing the blue box appearing at the other end of the room. Then the door opened and the doctor poked his head out. 'Come on Jack! You don't want to be messing around with the magic-users anymore than neccesary.'
Voldemort butted in. 'What is this!' He screached.
The Doctor replied, 'Its a Police Box! Can't you read?'
As the TARDIS de-materialised, Voldemort ran forewards, determined to grab the box before it left. He was too late.
He hit the wall face-first.
And for the first time ever, Voldemort was left speachless.