Hugh Cullane, accused of murder and sentenced to hang, is forced to deliver a message of betrothal to four-year-old Queen Mary of Scotland.
He faces death yet again when, in rejecting the proposal, the queen's guardian orders his severed head sent back to England in a jar.
Trained to protect her queen at all costs, Katherine Payne can show no mercy to the handsome messenger, despite the way his stolen kiss unsettles her single-minded sense of duty.
Trapped between the English and Scottish armies.