This is a story featuring the Seventh Doctor without any companion. But he doesn't turn up at first.
The story opens with what seems to be a classic horror slant - creaky doors, mysterious butlers and the elusive "Master" - whoever he/she may be?! Visitors to the house are expected, apparently, but they cannot remember who they are, where they came from, or what they might be there for. For the first two episodes, we follow these visitors as they attempt to make some sense of their surroundings and their place in them. And somewhere in there, the Doctor appears. But what is his role here? And why is it relevant that the four amnesiac visitors appear to have specific and strong phobias?
The listener is drawn deeply into this half of the story; it sounds like a gothic horror, and the sense of the unknown, the terror lurking in the dark, is really real. The second half of the story (third and fourth episodes) takes us a step back; into the background of the story, what it means and how these people have been drawn into something much larger than they could ever have anticipated.
The story is well-crafted; extremely well-cast and the actors in this really bring the whole story to life. It's great to hear a well-respected actor such as Timothy West getting involved in a Doctor Who story; just goes to prove, yet again, the relevance of the good Doctor. I really enjoyed this story, and it's one that I would listen to again more than happily and get something new out of it every time; highly recommended.