It was one of those ghostly / supernatural shows, and the episode I can vaguely remember was about a maze in a garden, with something buried under a plinth at the centre of the maze. Lots of people were trying to reach the centre, and eventually somebody does and all sorts of weird stuff happens, and I think it turns out that somebody was buried at the centre of the maze.
I also thought Helen Mirren was in it, but looking on the IMDb, it doesn't look like she was. She was in an episode of Thriller - which was kind of similar - but I know it's not that show I'm thinking of ... ?!
I also thought Helen Mirren was in it, but looking on the IMDb, it doesn't look like she was. She was in an episode of Thriller - which was kind of similar - but I know it's not that show I'm thinking of ... ?!