Based on a true story, the once-wealthy Chance family are swindled out of their Whitewall Estate in the mid-1700s and the truth isn't discovered for nearly ninety years. In 1850 Maria Chance promises her dying father to put this injustice to rights, and is thereafter plunged into some extraordinarily dangerous and terrifying situations in mid-Victorian Britain that threaten not only her life, but her sanity too. One hundred and fifty years later, Naomi Draper, the Head of the local Council's Historic Research Department, causes a long forgotten document case to be opened, and she too is immediately plunged into a web of intrigue surrounding ownership of the now named Whitewall Farm. As she and her diverse range of friends and allies begin to unravel the mystery, it soon becomes apparent that some very powerful people don't want the truth disclosed, and that they are prepared to do anything to suppress it.