This is a highly entertaining movie from the '80s when they still made them with opulence! "The Two Mrs. Grenvilles" was originally a novel written by Dominick Dunne. The plot is based on the real-life story of the shooting of William Woodward, a New York socialite. The question asked for years afterwards was, did his wife shoot him by accident thinking he was a burglar as she claimed? Or did she deliberately kill him? The film explores this and the lives of the wealthy along the way.
In the movie, Ann-Margret portrays the chorus girl wife who marries way, way above her station. The other Mrs. Grenville is her mother-in-law, played to perfection by the still glamorous Claudette Colbert. People who knew Woodward's real-life mother, Elsie, state that Colbert was dead-on in the role. In the book, film, and real life, the elder Mrs. Grenville supports her daughter-in-law throughout but not because she believes her or can even tolerate her. She does it to protect the family from scandal.
The movie spans fifty years and will hold your interest throughout.