Sepulchre

The Sepulchre was a house built by the Demon. It was on an asteroid at the edge of the known universe.
The house was surrounded by a negative field, making it appear that there was nothing outside it. Inside, the Demon revealed its true form. It built the Sepulchre so as to trap the Fourth Doctor for its employers, the Hornets. (AUDIO: Sepulchre)
Category:Buildings visited by the Fourth Doctor