Sally Vanderpump takes centrestage as Ines de Castro, the Spanish lady-in-waiting who challenges tradition as mistress of the married heir to the Portuguese throne, yet is every inch the pre-feminist romantic heroine. Less opinionated than Romeo's Juliet, and less stirringly tragic than Aeneas's Dido, Vanderpump's Ines is strikingly pretty and vulnerable, but rather too meek and passive to achieve either sympathy or credibility as a woman who maintains a high-profile love affair despite several death threats.