"Well, if we're gonna kill our dad, we should probably just kill our mom too." In August 1989, siblings Lyle and Erik Menendez purchased shotguns and drove to the Beverly Hills mansion they shared with their parents.

On Aug. 20, 1989, Lyle and Erik Menendez brutally murdered their parents, firing so many shots into them—to the point that Lyle returned to his car to reload his weapon—that their bodies were more or less mutilated.

I n the wake of the massive popularity of Dahmer, Ryan Murphy and Ian Brennan are back with a new season of their Monster anthology series that explores the lives and crimes of the infamous Menendez brothers.