I think this was a very interesting and well written movie. The substance of the movie was explosive. So very often one spouse works very hard to make a success out of the other mate. In the end they are tossed aside. Once success comes, the spouse who took second place is discarded because the feeling is they are a flaw in the society of the elite and successful. She had good reason to be angry, but there are better and more effective ways of getting even. Murder should never be a consideration. Betty went too far! The actress who played the sister of Linda, The new wife, showed a very uncanny resemblance to the actress who played Linda. I wonder if there is some relationship there.