There are many horrors that Elizabeth Reed recalls from her time at London's Royal Waterloo Hospital. 'It was like being buried alive,' she says. 'I was lying there in the dark, hour after hour, and couldn't move. I wasn't aware of my body, just my head in this darkness. You could hear people moving around and other people breathing and moaning.' While Elizabeth is one of only a handful of women prepared to speak out, her story is not unique. Up to 500 women, suffering from conditions such as postnatal depression and anorexia, passed through the Royal Waterloo's infamous Ward 5 before it shut 40 years ago. Heavily drugged and subjected to horrendous levels of electro-convulsive therapy (ECT) and even lobotomies, the unluckiest were taken to the 'Narcosis Room', where they were put to sleep for weeks at a time. Almost all teenage girls and women in their early 20s, they were treated as little more than guinea pigs by controversial psychiatrist William Sargant as he conducted a bizarre experiment to 'repattern' their brains and cure them of depression. Sargant, a founding member of St Thomas's department of psychological medicine, who advocated the use of drugs to treat mental illness, operated his 'sleep room' for ten years until 1973. Four patients are known to have died there and yet no one stepped in to stop him. A Cambridge medical graduate, obsessed with making a name for himself, he used high doses of tranquillisers and administered ECT up to twice a week on Ward 5 and every other day in the Narcosis Room. At the heart of his treatment was his belief that the brain could be 'repatterned' to erase bad memories.