From a fragile silk robe and a wartime wall painting to a writer's handmade timepiece, the hidden treasures in these two houses reveal the stories of two of Britain's most celebrated authors – and the expert teams racing to preserve them.

From a windswept island chapel battered by the North Sea to a quiet Welsh farmhouse that shaped the future of a language, this episode travels to two remote National Trust sites whose powerful stories have inspired centuries of pilgrims, revealing the delicate conservation work protecting their remarkable stories.