1690. England is in crisis – the new protestant King William III has embarked on wars in France and Ireland, inflation is rampant and the price of corn is causing riots.

At Measham Hall, Sir William Hawthorne faces a predicament of his own: his loyal steward has died, and he must find another. His problems appear to have been solved when the charming Mr Goodwyn arrives with a mysterious letter of recommendation and takes up the post. But soon, to the rest of the household's dismay, Goodwyn appears to have both Sir William and the estate dancing to his tune. Meanwhile, Sir William's heir, Nicholas, is in Ireland fighting against the Williamite troops. But Nicholas is playing a dangerous game as double agent, risking both his love and his life. When one battle is over, he must return to Measham Hall to fight another and defeat an old foe in a new guise or lose Measham Hall forever...