This is a in-universe counterpart of the real world Doctor Who television serial The Stones of Blood that exists within the Doctor's universe. It was mentioned in the short story The Stones of Spookiness, which featured Paul Magrs's fictional counterpart visiting the Rollright Stones, where The Stones of Blood was filmed in the real world.
The Confounding Case of the Planetary Prankster • The Pernicious Plots of the Big Game Hunter • The Dangerous Dilemma of the Dream Doorway • Assassin on the Railroads • The Curious Case of the Weirdling Woods
Some categorisation may be based upon conjecture. Real world information should not enter into this. Additionally, a character's role in the DWU can differ from the real world - their placement here is for categorisation.