The Mysterious Happenings at Greenwood's Castle

It's 1990 and the Westminster family has made the leap of faith to live their dreams in a small rural town in a home that will become their retirement plan -- Operating a bed and breakfast. The house, known by outsiders as 'Greenwood's Castle' and by the protective locals as 'the Castle', has everything the Westminsters want -- acreage, a pond, garden, and a rich and full history. It has sat empty for a decade since the elderly owners' stepfather passed away and the house is 'too big' for the twin sisters to properly care for.
But to the Westminsters, they will make it paradise. However, the moment the very logical Dr. Adam Westminster, his historian wife Dr. Georgia Westminster, and their teenage daughter begin to settle into their home, they uncover a tragic mystery that had been very intentionally hidden for over sixty years, and sets in motion events the Westminster family never bargained for. What is the truth to the mysterious happenings at Greenwood's Castle?