How we made Christiane F – the shocking cult film about a child heroin addict

Filming was banned at the station we shot at. So the cinematographer sat in a wheelchair, concealed the camera on his lap, and I pushed him around, following Natja cruising'

The director Uli Edel and his team came to my school. I was sitting there eating an apple. Uli's assistant came up and said: We're looking for girls for a film. Do you want to try out?" I said: OK, since you've asked me, I'll come."