Catherine Cookson's The Mallen Saga

The Mallen Curse (1x4)

Air date: Jun 10, 1979

Barbara has been rejected by her cousin, Michael, and enters into a loveless marriage with Dan whose family, the Benshams, have owned the Hall since her father, Squire Mallen, went bankrupt. The widowed Mr. Bensham proposes to Anna Brigmore, fulfilling her ruthless ambition to be mistress of High Banks. But their happiness is soon shattered when they discover that Barbara and Michael have become lovers again. Part 4 in the series.