Each year, approximately 16,000 people are murdered in the United States. 7% of the killers are female. Who are these women and what drives them to kill? Oxygen's hit true crime series, Snapped, in its 12th season, profiles the fascinating cases of women accused of murder. Did they really do it? And, if they did, why? Whether the motivation was revenge against a cheating husband, the promise of a hefty insurance payoff, or putting an end to years of abuse, the reasons are as varied as the women themselves. From socialites to secretaries, female killers share one thing in common: at some point, they all snapped.