The dashing Robert Carr is a well-known favourite of King James I and he rises quickly through the ranks. But when he is married to the cunning and beautiful child-bride, Frances Howard, a very dangerous liaison changes everything. Frances emerges as a headstrong force of nature - determined to have her way, no matter what the cost. Her attempts to rid herself of an unwanted husband, and later to ensnare a lukewarm lover, lead her deep into the world of spell-makers and treachery. This is a woman to underestimate at great peril. But when Robert finds himself ensnared in one of Frances's plots he finally learns what she is truly capable of.