Isabel Allende wrote her first novel, The House of the Spirits, more than twenty years ago, and it took the literary world by storm. Since then she has sold more than 50 million copies of her books around the world. Her latest is a memoir written to her dead daughter filling her in on how the family have coped since her death. Sarah Montague asks Isabel Allende about love, loss and the dangers of a self confessed liar writing her own family's history.