I recently started working on a Doctor Who RPG Scenario again that began its "life" as a short story a long time ago - I envision this as a full Doctor Who Adventure rather than a "short trip"as the whole "set-up" is quite in depth.
The Scenario Title was concieved as the "Ghost of Weng Chiang", though the original Story was
entitled "The League of Ordinary Gentlemen".
Without further ado - here's the gist of the Plot.
The Doctor travels back to Victorian Londan and once again meets up with Professor Litefoot & Mister Jago - who in the vacuum created by the Doctors absence have (sort of) become quite celebrated as consulting detectives.
Nothing major has happened in the 18 months since the Doctors departure after the events of "The Talons of Weng Chiang", other than the pair catching a mugger who disguised as a common street whore had 'turned over' several drunk gentlemen - oh and they managed to find one very lost burmese pet cat named Napoleon.
But as of late (as the Doctor finds out) there have been some very strange "goings on" - a small museum (local to the Palace Theatre) has had several break-ins and although nothing so far has been stolen - several ancient chinese exhibits have been ransacked and vadalized. The caretakers and nightwatchmen have commented on seeing a "Chinese Ghost" or "Oriental Corpse" wandering the halls.
In actuality it is the reanimated corpse of Li H'sen Chang, when Magnus Kreel granted Li H'sen his mental powers - powers "undreamed of in this century" (amongst them hypnosis, telepathy, and telekinesis) he also implanted his own personality in Li H'sens subconcious - should the Zygma Radiation finally destroy his body.
Because of the damage done to Li H'sens body, the mutations caused by his exposure to the Zygma radiation took a while to assert itself - reparing any damage and eventually re-animating it. Of course, after 18 months the body was in a sorry state - and initially only the conciousness could be projected to look for the "Zygma FLD" (Zygma Foldback Look Device) which could recharge the Time Cabinet once kept in Litefoots Dining Room. After a period of time, the body began to repair itself - hence the 'Zombie Sightings'. Now the body is fully repaired, Greels personality is fully in control - that is a problem, as the Zygma radiation permeating the body will cause mutation to begin.
MEANWHILE, the Chinese Exhibit has be evaluated by the British Museum (a consequence of the vandalism) and found to be of extraordinary interest - and moved there. Li H'sens re-animated body now finds itself in need of the same life essences the Greel himself needed, in order to keep itself from reverting back to its corpse-like state - but because of the Zygma Mutations is able to 'extract' these essenses directly - leaving two puncture marks on the center of the forehead.
Of course the Doctor will investigate (much to Jago's apprehension), and its not long before the Press and the Police start bandying the term "Brain Vampire" about.
When the Doctor and his 'companions' (it could be fun JUST to run it with Jago and Litefoot LoL) figure out whats going on with the Zygma FLD, they realize that the have break into the British Museum to steal it. They can't use the TARDIS, as Artron Energy makes Zygma Radiation VERY unstable - and the blast would take out most of London. So, they must come up with an elaborate plan to steal the Zygma FLD before the Li H'sen/Greel mutant gets to it.
Though it could be any Doctor, I always imagined it to be the 6th Doctor (a personaly favourite of mine, and not just because I used to know Colin quite well Lol - sheet to follow) - as he 'suffers fools lightely' and whilst he would respect Litefoot as a trained Physician I think he would find Jago very VERY irritating.
Using the 6th Doctor would not only allow for many Comic opportunities, but also allow for a refreshing change of pace during your Games.
As for a companion, Peri would work out quite nicely - although Mel would do just as well, as the companion isn't the most important part of the plot.
As with all Doctor Who Scenarios, the Doctor (if run as an NPC) is a support character, there to facilitate the Adventure - so do not let his presence dominate the Players or their Actions (difficult to do with the 6th Doctors domaneering personality). You could even take a leaf out of Sir Arthur Conan Doyles book, and have him "dissapear" doing his own thing (much like Sherlock Holmes did in the Hound of the Baskervilles) leaving the Players to do most of the "investigating" on their own.