Ursula, traveling to the Netherlands to escort her foster daughter to meet her suitor, also investigates whether or not a wealthy Italian banker is plotting to put Mary, Queen of Scots on the English throne February, 1571. Ursula is once more plunged into affairs of the state when she escorts her foster daughter Margaret to the Netherlands to meet her suitor. The queen's spymaster, Sir William Cecil, learns that the wealthy Italian banker Roberto Ridolfi will be hosting their forthcoming wedding - a man who he fears may once again be plotting to put Mary Queen of Scots on the English throne.