Cathy and several others have mentioned being tired of domestic thrillers; usually the plots are pretty interchangeable. Below is an excerpt from a letter written in 1677 illustrating the long tradition of unhappy and turbulent marriages. A little research revealed that the two deserved each other, but Marguerite Louise was seriously unhappy:
You are driving me into such a state of despair that no hour of the day passes when I do not desire your death and wish that you were hanged. What aggravates me most of all is that we shall both go to the devil and then I shall have the torment of seeing you even there. I swear by what I loathe above all else—that is yourself—that I shall make a pact with the devil to enrage you and to escape your madness. Enough is enough. I shall engage in any extravagance I so wish in order to bring you unhappiness. If you think you can get me to come back to you, this will never happen, and if I did come back to you, beware! Because you would never die but by my hand.
Marguerite Louise D’Orleans | Letter to her estranged husband, Cosimo III De Medici, 1677 | The Medici Women