Having started on a nicely quirky note, the book settles into a more prosaic style - fortunately without losing too much of its charm. It takes place in Iran, initially at the end of the Shah dynasty and then into the rule of the Mullahs. An Immam on every corner! Whilst neither regime was exactly democratic, the changeover boosted the number of political prisoners, disappearances and executions.
Although important, the political scene is the context rather than the centrepiece. The underlying theme is the close relationship between father and son. The father is an illiterate deaf-mute who becomes inspired by ancient cave writings. They are inscribed in an esoteric pictorial script that the experts struggle to translate. He invents his own version to enable him to set down his life's thoughts in secret. Son Ishmael is alway close at hand to help his father communicate day by day and to offer moral support. As Ishmael benefits from a formal education, and becomes an underground party activist, the two men's interdependency reduces. However their love and mutual respect never diminish.