The premise of this story is that the fabric of a building - the bricks or in this case the stones - can absorb or record events of the past and re-play them when triggered by another event - in this case some re-building work taking place in a gothic mansion. As you would expect, the events involve evil and malevolent spirits. I will say no more, as I don't want to spoil the rest of the plot.
I can remember seeing this the first time around, (probably the 1973 broadcast) and the story made an impact on me as it seemed almost a plausible phenomenon at a time when little green men and UFOs were much in the news. If this is a re-release of the original, starring Jane Asher, I would say that the story is still a good one, but sad to say the production now looks a little dated - the acting of some is wooden, the special effects could be better and the colour is a bit dodgy, etc. But if you are a fan of ghost stories, it is worth a watch. Ghost Stories from the BBC: The Stone Tape [DVD]