AN: I know I haven't updated this in a while but I've been super busy with lots of family stuff going on and haven't had time to type up the next chapter. Everything will become less confusing in the next few chapters I promise. Don't own a thing! Please read and review! The last episode was great where the Doctor was about to tell Rose he loved her! It was great!

Here it is!

Professor Clark checked his stores before his first class of the week and noticed to his annoyance that more ingredients had been taken and some were irreplaceable at least until the next quarter moon. Sighing Professor Clark made a new inventory of all his ingredients and placed the list carefully in his office desk drawer. He returned to the classroom and waited for his group of fifth year ravenclaws and gryffindors. He was going to teach them the sleeping draught that morning but with so many ingredients missing he was unlikely to cook the potion up himself.

Elsewhere the Doctor and Rose were summoned to the headmistresses office and the Doctor had a sneaking suspicion he would be asked to teach again, but with what happened last time he felt guilty and determined to put things right. Professor McGonagall was sat at her desk looking solemn. On the desk now was a beautiful stately tawny owl; clasped in its beak was a thick heavy parchment. Professor McGonagall quickly relieved the owl of its burden and handed it to the Doctor.

'This is for you,' the doctor unwrapped the parchment quickly and scanned it over. Finishing the letter he said

'Some things never change do they, after all these years, he's still after-'

'Doctor, you have to understand, Rufus Scrimegeour is one never to let a grudge go. He obviously knew you were here-'

'He always knows when I'm here, but this time will be different. He won't have control here.' The Doctor said quietly 'he learnt that last time, that meddling in the business of the school results in many a death. And this time the blood on my hands may be very welcome if he dare approaches me again,'

Flashback

The Doctor stood amidst a number of witches and wizards in a crowd gathered on the Hogwarts lawns all demanding to be let back into the school where there children were being kept. He looked up to the sky and saw half a dozen witches and wizards on broomsticks trying to keep people away from the main doors. Rufus Scrimegeour was stood at the main entrance, looking almighty and all powerful as Minister of Magic, with Jerinda Caldwell and Cerus Signet between them they had monopolised Hogwarts in the past few years. Ministry interference had finally established itself especially now with Harry Potter gone.

'LET US IN!' the witches and wizards cried trying with all their magical might to break through the barriers around the school, protecting it from intruders or in this case the concerned parents of those young witches and wizards inside. The doctor pushed past the parents and managed to get himself to the front He looked up at Scrimegeour and the minister stared hard at the Doctor.

'Let them in,' the Doctor roared above the chattering crowd

'Who are you,' Caldwell demanded

'Let these people in, there is no need to keep the children locked up-'

'They are a danger to themselves and those in this world. Hogwarts needs to be contained before the monster within escapes and unleashes havoc on this world,' Caldwell replied

'Let them in,' the Doctor repeated steadily

'The wizarding world needs to start again,' Scrimegeour shouted at the Doctor 'you know what this means,' he paused ', Doctor'

'It means you're finally cracking up,' the Doctor roared 'let them in, and you can have me,'

Scrimegeour looked hard at the Doctor before turning to Caldwell and whispering something in his ear.

'That is a fair trade,' Scrimgeour said and Caldwell and Signet quickly reached the doctor and pulled him roughly by the arms up to Scrimgeour and they threw the Doctor to the ground. 'Open the gates, but on your head be it Doctor as usual, the monster within will roar and thousands will die,'

'There is no monster here but you, we know who you've got locked up in that school and why. You're scared you precious Potter will join Voldermort, and if he does that will be the end of your world,'

'Doctor, you are no wizard and your ignorance shows clearly, if Potter were to join Voldermort the whole world would cease to exist,'

'Harry Potter has no intention of joing Voldermort, Scrimgeour, you just don't want the Dumbledore's army to turn against the ministry completely and destroy you,' the Doctor roared 'you're nothing but a scaredy cat frightened of powers you can't control, let the students go and take me,' he added

'Interesting swap Doctor,' Caldwell said

Scrimgeours little eyes lit up and he stared down at the Doctor, he had been searching for the doctor and the magic of the tardis ever since he was a school boy and knew that this magic was worth more than the world itself. Scrimgeour nodded and with a masterful wave of his wand with the help of Caldwell and Signet the gates to Hogwarts opened and the parents rushed inside. Soon the hill was empty except for the Doctor and the Minister.

'I have waited years to get the tardis,' Scrimgeour said gleefully 'tell me Doctor where is your beloved home away from home shall we say,'

'You get me Scrimgeour,' the Doctor said nervously 'the Tardis was never part of the deal and you know that,'

'I have been chasing you all my life doctor, to know what that peculiar sound was that I heard when I was eight years old, the magical sound of the magic blue box,'

'I don't like people calling it that,' the Doctor said angrily.

'Doctor, come,' Scrimgeour called 'I will learn the magic of your blue box'

There was then a tremendous hissing noise from within the school and screams were heard and Scrimgeour did not move an inch of his body. The Doctor stared steadily at the gates that had been flung open and could sense the death and decay that was happening within the walls. The doctor had let those witches and wizards go in there and the screams signified something terrible. Scrimgeour had been telling the truth. There was something inside, something wanting to be let out and the Doctor now blamed himself.

'Look what you've done Doctor, the monster has been unleashed,'

'You let innocent people get hurt?' Rose said astounded. The Doctor failed to make eye contact with Rose and looked out of the window.

'Rufus Scrimgeour is a very calculating man Miss Tyler and the Doctor like so many of us were fooled. He is obsessed by the Doctor. The power of the tardis is the one magic no witch or wizard can ever get his or her hands on,' McGonagall explained

Rose was staring hard at the doctor and she could hardly believe he had let something so terrible happen to anyone, and in particular innocent children. She could not believe it.

Professor Clark watched his students empty their bags and light the fires under their cauldrons before he addressed the mingle of students all anticipating their potions class.

'Now today we will be dealing with the sleeping draught,' he explained 'it a very powerful potion, but unfortunately a limited number of you only will be cooking the potion. As several ingredients yet again have been taken from my cupboard.'

The class went deadly silent all remembering only too well the last time Professor Clark had found his ingredients missing. Briana Lowestoft raised her hand timidly in the front row.

'Yes Briana?'

'Who will be making the potion then and how many ingridents were stolen?'

Professor Clark carefully contemplated his answer andlet his eyes scan the room and at random he picked out four volunteers to test the potions and four to cook up the potion. The rest of the class were to sit and watch and if there was some potion left over they were all to take a draught themselves.

'Isnt that a bit risky?' Briana asked 'can you test potions on students?'

'Well how else will you learn?' Professor Clark said musing 'you'll see the effects of the potion and how it works. And yes Briana it is all above board, now any more questions be cause if I find one of you is stealing from my store cupboard I shall ban every single one of you fgrom every future quidditch game and Hogsmeade visit,understand?'

'Yes Professor Clark,' the voice chorused and they got to work. Briana and Janelle separated their ingredients and carefully opened their potions books. Briana glared at Janelle and her potions book.

'What?'

'That's cheating, you know,' Briana said 'this Prince fella-'

'Is just helping me out,' Janelle said dismissively 'and whats the harm in adding a few extra ingredients to the potion, has this prince ever gone wrong before?'

Briana pulled a face and grumbled 'No,'

'Settled then,' Janelle said smartly 'now what goes first….'