The Chimes of Midnight by Robert Shearman is one of many Big Friendly Giant Audio dramas. Featuring Basement McGann and Charlie Pollard, and plagarised from the Simpsons episode "Bad Dream House." Featuring warm fuzzy christmas themes like sexual exploitatin, poverty, suicide, death and strangulation.
Doctor and Charley arrive in a spooky ghost house and shit goes down, every time the clock chimes at midnight someone is inexplicably murdered and the apathetic gee wizz members of the household don't seem to give a shit, creepily affirming to themselves that "they are nothing".
One of the very bestest Doctor Who stories ever.