If she can't have him, no one can. That, in a nutshell, is the gist of this true-crime series that recounts in salacious fashion the relationships between cheating men and their hellbent-for-revenge "monstresses." Each hourlong episode presents two stories -- told via re-enactments and interviews with people close to the situations -- of mistresses embroiled in scandalous affairs, and the moment they become tired of being the "other woman" is when the plot thickens and deadly consequences follow.