Mary is Queen of Scotland but she has been forced to flee her land and take refuge in an England that is ruled by her cousin Elizabeth. But England, precarious in its Protestant state, set against the mighty powers of Spain, France and Rome, doesn’t need a charismatic Catholic figurehead at large. So Elizabeth’s chief advisor, Cecil, devises a plan in which Mary will live under guard with his trusted accomplice: Bess of Hardwick.

Bess is a self-made woman, a shrewd survivor. She is newly married to her fourth and most distinguished husband, the Earl of Shrewsbury. But what marriage can withstand the charms of Mary? Or the threat of rebellion that she always carries? Mary must wait in her privileged imprisonment for the return to Scotland and her infant son; but waiting is not the same as doing nothing…