Witty, wealthy and beautiful, Catherine Tylney Long was the most eligible heiress in England. Courted by royalty, she chose instead to marry William Wellesley, the charming but feckless and dissolute nephew of the Duke of Wellington. Combining archival research and the readability of detective fiction, this history unravels the story of a scandalous marriage that delighted the press and cartoonists of the day, and culminated in financial ruin and a landmark court case.