At his death in 1547, King Henry VIII left four heirs to the English throne: his only son, the nine-year-old Prince Edward; the Lady Mary, the adult daughter of his first wife Katherine of Aragon; the Lady Elizabeth, the teenage daughter of his second wife Anne Boleyn; and his young great-niece, the Lady Jane Grey. In her new book, Alison Weir paints a unique portrait of these four extraordinary rulers, examining their intricate relationships to each other and to history.