Mary, who was Queen of France at 16 and widowed at 18, defies pressure to remarry. Instead, she returns to her native Scotland to reclaim her rightful throne. But Scotland and England fall under the rule of Elizabeth I. Each young queen beholds her sister in fear and fascination. Rivals in power and in love, and female regents in a masculine world, the two must decide how to play the game of marriage versus independence. Determined to rule as much more than a figurehead, Mary asserts her claim to the English throne, threatening Elizabeths sovereignty. Betrayal, rebellion, and conspiracies within each court imperil both thrones - and change the course of history. Also stars Margot Robbie, Jack Lowden, Joe Alwyn, Gemma Chan, Martin Compston, James McArdle, David Tennant and Guy Pearce Director by Josie Rourke.