I first became aware of her in State of the Union. She worked with two notorious scene stealers - Tracy and Hepburn - and managed to bury them in almost every scene she was in.
I also loved Murder She Wrote as did my aunt, who saw her as an example of a woman living a full and satisfying life well past middle age. Jessica Fletcher, in Lansbury’s hands, was a steamroller, but she could disagree without being disagreeable and had a strong sense of her own worth. Her character taught me a lot.