For these heartless women envy is the deadliest sin. An obsessed mistress sacrifices her lover's wife; a young lover kills her girlfriend to keep her from the arms of another; and an angry cowgirl destroys her ex's life by destroying his family.
When these women have scores to settle, they take matters into their own hands. A traumatized woman thinks she's an avenging angel; one of Mexico's most infamous serial killers targets the elderly; and a man is butchered by two women he tries to help.
Some women like company when they take a life. Teenage lovers chose each other over the life of a loving grandmother; a cold-hearted aunt uses her nephew to become a wealthy widow; and a friendship turns fatal for one unsuspecting husband.
When a former police officer is dumped she takes the law into her own hands; a quiet housewife buries her marriage problems in the garden; and an excited fiancée turns into the worst kind of bridezilla.
Some women have short fuses, and when their blood boils get out of their way. A couple's New Year's resolution ends in a murderous rampage; a pious parish housekeeper hides a sinful secret and a Christmas drink between neighbors has a deadly hangover.
A secret addiction drives a young woman to sacrifice her wheelchair-bound employer; a scheming caregiver betrays the man who trusts her; a single mother's desire for a better life leads to a brutal dismemberment.