Season one of Monsters, writer Ryan Murphy’s addictive anthology TV series about appalling human behaviour, told the story of America’s most notorious serial killer, Jeffrey Dahmer. For Season Two, the showrunner – comfortably the most prolific and successful man in elite TV – has outdone himself, retelling the double murder of Jose and Kitty Menendez by their sons, spoilt Bel Air brothers, Lyle and Erik, in the case that gripped America.
