De Winter

 was the hostess of a garden party which the Second Doctor and Victoria Waterfield attended. She told the Doctor that she thought that the garden was against her and there was someone controlling the garden party. When she met Leela and Jamie McCrimmon she couldn't see a monster. She eventually became distraught. She questioned why people would condition people to see a garden party. She broke the mast which was controlling them. The Doctor later thought why she didn't change to look like the other inhabitants of party. The place that she was in was her prison. (AUDIO: Dumb Waiter)