Once I escaped from an orphanage to find Mum and Dad. Once I saved a girl called Zelda from a burning house. Once I made a Nazi with a toothache laugh.My name is Felix. This is my story.A story of children in the Holocaust, Once is poignant and powerful without being frightening or graphic. With his gentle and utterly alive manner, Gleitzman reads the tale of Felix, a Jewish boy who runs away from the convent where his parents had him hidden and roams the countryside with an orphaned girl until they find their way to the cellar of a print shop in the Warsaw ghetto, where an old dentist has been protecting lost children.