Inspired by Benjamin Wooley’s non-fiction book The King’s Assassin, Julianne Moore stars as Mary Villiers, a woman of humble beginnings and formidable ambition who moulded her second son, George (Nicholas Galitzine), to seduce King James VI of Scotland and I of England (Tony Curran) and become his all-powerful lover.

Sky Atlantic UK & Starz US & Canada. Distributed by NBC Universal.