Vanessa Ashley felt herself qualified for a position as governess, until offered the position at Falconbridge Hall. Left penniless after the deaths of her artist father and suffragette mother, Vanessa Ashley draws on her knowledge of art, politics and history to gain employment as a governess. She discovers that Julian, Lord Falconbridge, requires a governess for his ten-year-old daughter Blyth at Falconbridge Hall, a huge rambling mansion in the countryside outside London. Lord Falconbridge is a scientist and dedicated lepidopterist who is about to embark on an extended expedition to the Amazon in search of exotic butterflies. An enigmatic man, he takes a keen interest in his daughter's education, but Vanessa feels that he may disapprove of her modern methods. As she prepares her young charge to enter into the modern world, Vanessa finds the girl detached and aloof. As Vanessa learns more about Falconbridge Hall, more questions arise. Why doesn't Blythe feel safe in her own home? Why is the death of her mother, once famed society beauty Clara, never spoken of? And why did the former governess leave so suddenly without giving notice?