I had a curious sense of being watched.June 1914 and a young woman - Clara Waterfield - is summoned to a large stone house in Gloucestershire. Her task: to fill a greenhouse with exotic plants from Kew Gardens, to create a private paradise for the owner of Shadowbrook. Yet, on arrival, Clara hears rumours: something is wrong with this quiet, wisteria-covered house. Its gardens are filled with foxgloves, hydrangea and roses, it has lily-ponds, a croquet lawn - and the marvellous new glasshouse a ...