I remember watching this and not being able to sleep afterwards. I seem to remember lots of parents complaining that it was "too scary for children"! Freddie Jones expertly delivers this ghost story. A man recalling his stay in a supposed haunted Red Room and his descent into absolute terror. Very believable to the series young audience. I rewatched it again recently for the first time since it was first aired on tv. It sent shivers down my spine again and I'm now 53! If you've never seen it, give yourself a scare.