New challenge from yours truly.
Okay this one is mostly LOM based but the Doctor does show up, you just choose when.
The Life on MArs characters find an object at the Railway Arms that lets of a bright light, and suddenly everyone is in someone else's body.
Oh yes the body switcheroo has happened to at least Gene and Sam, others to if you want.
The Doctor show up when and however you want him to.
It has to be 4, 5, 7, 8, 9, or 10 though.
Rose non optional if its 9 or 10.
Martha and Donna are optional if it is 10.
Jack is optional for 9 or 10.
Anyone else, don't care.
Please let them be het but if not oh well.