In 1925 beautiful, bohemian Diana Pollexfen was celebrating her 30th birthday with a party at a country estate, but the celebrations soured when her husband died, poisoned by a cocktail that had been liberally laced with some of Diana's photographic chemicals. Sixty years later, Diana's grand-niece, Helena, is also turning 30, but with rather less fanfare. An overworked attorney in London, Helena's primary social outlet is an obsessive love affair...