Katherine Waterston stars in The Current War, a historical drama film that tells the story of the rivalry between Thomas Edison (played by Benedict Cumberbatch) and George Westinghouse (played by Michael Shannon) to electrify America in the late 19th century. Waterston portrays Marguerite Westinghouse, George Westinghouse's wife, who supports her husband's endeavors and plays a crucial role in the development of the alternating current (AC) system. The film explores the personal and professional challenges faced by these inventors as they compete for dominance in the electrical power industry. Katherine Waterston's performance in The Current War showcases her versatility as an actress in both period dramas and historical biopics.