Sometimes the more dramatic the person, that is the killer !
This is illustrated as the actress Jane Wilkinson. Despite in a marriage with Lord Edgware, she wants to marry Duke of Merton. However divorce is not an answer, as the Duke of Merton is particular about divorces. He will only marry Jane Wilkinson if her husband has died.
I like some of Hercule Poirot’s remarks.
“One will stand a good deal from a beautiful woman, my friend,” said Poirot with a twinkle.