An explosive, erotic novel about two sisters, each of whom embarks upon a voyage into the heart of evil and a game with a seductive man who knows no rules or limits. Only one returns.

Successful, attractive, and in control, Nora seemed so different from her shy, terribly vulnerable younger sister. Grieving for Franny, Nora reads her diary and is stunned when it reveals a secret sadomasochistic affair with a mysterious professor known only as M. Nora vows to seek justice for the sister she never really knew and undertakes a daring scheme to seduce this lethal and...