When Julien St. Clair, Earl of March, sees Katherine Brandon for the first time, she is dressed like a boy and engaged in a mock duel with her brother. And since it's her turn to die, she falls dramatically at Julien's feet. Suddenly, the earl finds himself bewitched by this unusual young lady and decides that he wants her. From the glittering ballrooms of 1814 London, to Paris and Switzerland, the earl and his unwilling bride play a dangerous game of passion -- until Julien discovers Katherine's terrifying secret.