Watch Agnes Martin Before the Grid (2016) : Full Movie Online Free Agnes Martin is one of the most important artists of the twentieth century. Before she died in 2004 at the age of 92, her paintings sold for millions of dollars and were displayed in the world's greatest museums. Through interviews with her friends, lovers, and classmates who knew her well, insight is gained into Agnes Martin's personality and the development of her creative process before she became known for her grid paintings.