David Tennants and Werewolves

It's dark. It usually is dark at night. Anyway, the point is, it's dark.
I venture into a garden with Harry Potter and Ron Weasley, both are in their Hogwarts uniform.
Suddenly Ron spots some broken glass.
"Ooh! Look! Broken glass!"
He points his wand at the small pile and cries: "Reparo!"
The glass forms into a weapon of sorts.
Ron holds it like a bazooka and presses the end which looks like - which basically is - the base of a wine glass. A bright circle of light appears out of the other end of the 'weapon' and hits the low garden brick wall.
Ron and I get really excited.
"Ooh! A light!"
"Can I have a go?"
Harry doesn't actually do anything. He's just there.

After some fun with the glass torch we make our way up a path to a run-down, rather shabby looking shack.
We enter through dusty french doors and find ourselves confronted by none other than David Tennant. On either side of him, much like menacing bodyguards or henchman, stood shorter versions of David Tennant.
Then, without warning, all three of them turn into werewolves! It was quite scary actually. The three of them are still standing upright and their shoulders down look perfectly David Tennant, but the heads...
The heads are just really gruesome, hairy Lupus Gigantormus heads.
Harry and Ron are scared stiff, but not I!
I grab the glass torch out of Ron's hands and shine the light onto the three werewolves. They all transform horribly back into human form and run away.

The three of us, feeling rather proud of ourselves yet still relieved, venture on through the house/shack thing.
Then there stood David Tennant - another one - and two more Short David Tennant Henchpeople.
We know they are werewolves - but they are still in human form! The light doesn't work on werewolves in human form!
What happened next is slightly fuzzy, but we somehow defeated them. Well, I did anyway.

We move on further into the house and then we come across, yes, three more David Tennants!
These David Tennants are already in wolf form. I am feeling very merry. Oh, eradicating werewolves is such good fun! And so I howl,
"Ahwoooooooooooooooooooooooooooooooooo!"
and laugh.
Then out of the corner comes another werewolf, no not David Tennant, but a stooping, short, slimy werewolf-headed-human-thing.
The Stooping-Short-Slimy-Werewolf-Headed-Human-Thing then grabs me and chucks me out of the shack.
I am appalled! How dare he do that to me.
I wave him aside and go back indoors. There stood the last three David Tennant Lupus Gigantormi and two new creatures.
Yes, Harry and Ron had got bitten by the Head David Tennant while I was out and were now werewolves too.

...

I took them home. Although now, they had turned into a random girl and guy I had never seen before. It's late and I am quite scared. There are werewolves - two werewolves - in my house and it was full moon. What if they bit me during the night? I bet they are scheming against me.
Just after that thought, the guy werewolf sneaks past in that cliched sneaking way, cackling:
"It's 10:30 now. Time to go to bed!"
That was just creepy.
Then I remember: "ARGH! You haven't taken your Wolfsbane Potion tonight!"
I start running around my room, freaking out.
"We have to go to St. Mundungus immediately!"
I brought the two werewolves outside and we apparated to the Wizarding Hospital.
I knew it wasn't called St. Mundungus and I spent most of the rest of the dream trying to remember what it really was called.

The Wizarding Hospital is called St. Mungo's as featured in Harry Potter and The Order of the Phoenix