Natalie Dormer is set to star in BBC Two's one-off 18th century factual drama, The Woman in Red.
The 32-year-old Game of Thrones actress will take on the role of Lady Seymour Worsley in the show.
According to Digital Spy, "The Woman in Red follows Seymour Worsley on trial, after she tries to leave her husband Sir Richard Worsley (Shaun Evans) and elope with his best friend Captain George Bisset (Aneurin Barnard)."
Speaking about her new role, Dormer said, "I am thrilled to be playing a woman who was so ahead of her time. Though our story is set in the 18th century, it challenges and explores the issues still fully relevant today of freedom and equality.
"To be home in London shooting with such a talented ensemble in front of and behind the camera is a real treat."
The Woman in Red is scheduled to air in 2015.