Vivacious Vivienne Taylor has finally won her family's approval by getting engaged to the wealthy and upright John Vandergrift. But when threatened by a vicious blackmail scheme, it is to her childhood friend that Vivienne turns; the deliciously wicked Viscount Dashiell. Lord Dashiell promised himself long ago that his friendship with Vivienne would be the one relationship with a woman that he wouldn't ruin. He agrees to help her just to keep the little hothead safe, but soon finds that Vivienne has grown up to be very, very dangerous to all of Dash's best intentions.