Alan visits Castle Ward in Northern Ireland, the setting of Winterfell in Game of Thrones. He learns why the 18th-century mansion was designed in two completely different styles - Palladian on one side and gothic on the other, learns the history of its warring owners and uncovers stories of lunacy, attempted murder, groundbreaking science and tragedy.

Alan is in North Wales, discovering the unique story of Erddig, a grand mansion where the servants and the Yorke family, who owned it for many years, enjoyed a very close relationship. At Powis Castle, Nigel Havers checks out some magnificent topiary, and Miriam O'Reilly learns how servants were kept very firmly in their place at Calke Abbey, Derbyshire.

Alan Titchmarsh reveals the history, human stories and the hidden treasures of Britain's historical estates. This spectacular mansion spread out over a stunning 900 acres of Staffordshire was built by a mixture of courage, creativity and brotherly love.