Two years after the events of Pride and Prejudice, Mary Bennet is a confirmed spinster. Content with her books and music, she is only mildly distressed by her mother's attempts to find her a husband. Mary's predictable and admittedly dull existence is interrupted by tragedy when she and her sister kitty are attacked by a bloodthirsty vampire on the road home from Lucas Lodge.
Though she escapes unscathed, Kitty is gravely wounded and begins to turn. The only aid Mary can hope for is in Benjamin Gordon, the overbearing vampire hunter who killed the creature. Through sheer stubbornness, she convinces Gordon to take both Kitty and herself to London, where they will try to find the ancient vampire whose bloodline is the key to breaking her sister's curse.
In her new reality of spiteful debutantes, shocking family secrets and physical combat, Mary must find the strength to do what she must to save Kitty, even if it means risking everything.