Lady Therese of Essex has everything a woman could hope for: beauty, elegance, and wealth. The only real problem lies in her luck with men, due to her strong-willed, spirited nature and intellect. Then one night a letter arrives at the castle addressed to her late father Lord Richard. Before she has a chance to read the letter, it is found missing, and so too its source. In the process of solving this mystery, she discovers an unpleasant truth about her father's death four years ago, a truth that forces her to examine her own life and question which of her companions are truly friends and which are foes. Ultimately, Therese must choose between blind vengeance and impartial justice.