In The Current War, Katherine Waterston plays Marguerite Westinghouse, the wife of George Westinghouse (played by Michael Shannon). The film tells the story of the rivalry between Thomas Edison (played by Benedict Cumberbatch) and George Westinghouse as they compete to bring electricity to the United States. Marguerite is a supportive and intelligent character who stands by her husband's side throughout the challenges they face. The Current War explores the personal and professional struggles of these historical figures and delves into the complexities of the battle for electrical supremacy. With its stellar cast and thought-provoking narrative, The Current War is a captivating film that sheds light on an important chapter in history.